15+ Other Ways to Say “Sorry to Keep You Waiting” in an Email (Formal, Informal & Professional Alternatives)

Last updated: 6 September 2026

“Sorry to keep you waiting” is one of the most repeated lines in email writing. It works, but it gets boring fast, and it doesn’t always match the tone you need. A short text to a friend needs a different feeling than a formal email to a client. The words you choose shape how people see you — they can make you sound careless, or calm, professional, and in control.

Using fresh alternatives helps your writing sound natural instead of repetitive and robotic. It also helps you match the exact mood of the moment, whether that’s light and friendly or serious and formal. Here’s a quick contrast: formal — “I apologize for the delay in my response”; informal — “Sorry for the late reply!” Same idea, very different feeling. This guide gives you 15+ ways to express that idea, with clear notes on tone, grammar, and the best place to use each one.

What Does “Sorry to Keep You Waiting” Mean?

This phrase is an apology. It tells someone that you feel bad because they had to wait for you, your reply, your service, or your decision. It’s simple, polite, and works in almost any setting.

Grammatically, it’s a fixed expression built from an adjective phrase (“sorry”) plus an infinitive clause (“to keep you waiting”). It functions like a short apology statement, similar to an interjection in spoken use.

Synonyms: apologies for the delay, sorry for the hold-up, thanks for your patience. Opposite tone: a careless phrase like “Took me a while, no big deal” shows no real concern for the other person’s time.

Sample sentences:

• “Sorry to keep you waiting, the meeting ran long.”
• “I’m sorry to keep you waiting for this update on your order.”

When to Use “Sorry to Keep You Waiting”

In Spoken English

This phrase fits naturally in face-to-face talk, phone calls, and customer service. A receptionist or support agent might say it before helping someone.

In Business English

It works well in meetings, calls, and quick check-ins with coworkers or clients when a short delay happened.

In Emails and Messages

This is one of the most common email openers when a reply took longer than expected. It softens the message and shows respect for the reader’s time.

On Social Media

It appears in direct messages or comment replies, often in a shortened, casual form like “sorry for the wait!”

In Academic Writing

It rarely appears in essays or reports, but fits in academic emails to professors or advisors when a response was late.

In Professional Meetings

It’s common as an opening line before a presentation or discussion starts a few minutes behind schedule.

Is “Sorry to Keep You Waiting” Polite or Professional?

This phrase sits in a flexible space. It can be polite, neutral, or slightly soft depending on how it’s used.

Etiquette tip: This phrase is generally safe for the workplace, but in very formal corporate emails to senior leaders or external partners, a more polished alternative like “I apologize for the delay” often reads more professional.

Pros and Cons of Using “Sorry to Keep You Waiting”

Pros: widely understood everywhere, feels warm and considerate, simple for beginner learners, fits both spoken and written communication.

Cons: can feel repetitive if overused, sounds slightly casual for very formal or legal documents, may feel weak for a long or serious delay, doesn’t always explain why the wait happened.

Best Alternatives to “Sorry to Keep You Waiting” (Full Breakdown)

Formal Alternatives

Apologies for the Delay

Meaning: A short, formal way to say you’re sorry that something took longer than planned. Explanation: Removes the personal “I” and “you,” making it sound neutral and business-like — professional without sounding overly emotional. Grammar Note: Formal noun phrase, often used as a sentence opener. Example: “Apologies for the delay; I needed extra time to review the contract.” Best Use: Formal emails, workplace messages, client communication. Worst Use: Casual texts to close friends. Tone: Formal, professional | Level: Intermediate | Similarity Score: 9/10 Tip: Use when you want to sound polished without adding extra emotion.

My Apologies for the Delay

Meaning: A polished, personal version of “apologies for the delay.” Explanation: Adding “my” makes the apology feel more personal and sincere while keeping a formal tone. A favorite in polished business writing. Grammar Note: Formal possessive phrase. Example: “My apologies for the delay in sending over the report.” Best Use: Formal emails, client communication, workplace updates. Worst Use: Friendly texts. Tone: Formal, professional | Level: Advanced | Similarity Score: 9/10 Tip: Use for a slightly more personal version of a formal apology.

Apologies for the Delayed Response

Meaning: A formal, polished version of “apologies for the late response.” Explanation: “Delayed” sounds more official than “late,” making it common in corporate writing. Grammar Note: Formal noun phrase. Example: “Apologies for the delayed response to your inquiry.” Best Use: Corporate emails, client service, official communication. Worst Use: Friendly chats. Tone: Formal, professional | Level: Advanced | Similarity Score: 8/10 Tip: Use in official or corporate settings for a polished feel.

I Regret the Delay

Meaning: A formal, slightly stronger way to express sorrow about a delay. Explanation: “Regret” carries more emotional weight than “sorry,” suiting serious situations such as missed deadlines. Grammar Note: Formal verb phrase. Example: “I regret the delay in processing your refund.” Best Use: Formal business letters, serious client communication. Worst Use: Casual chats. Tone: Formal, strong | Level: Advanced | Similarity Score: 8/10 Tip: Use only when the delay caused real inconvenience.

I Apologize for the Wait Time

Meaning: A formal apology that names the wait directly as “wait time.” Explanation: Feels structured and slightly technical, often used in customer service scripts and official replies. Grammar Note: Formal verb phrase plus noun. Example: “I apologize for the wait time; our system experienced a brief outage.” Best Use: Customer service emails, official company replies. Worst Use: Personal, friendly messages. Tone: Formal, neutral | Level: Intermediate | Similarity Score: 8/10 Tip: Use in scripted or official customer communication.

Professional / Semi-Formal Alternatives

Thank You for Your Patience

Meaning: A way to thank someone for staying calm during a delay, instead of apologizing directly. Explanation: Shifts the focus from your mistake to the reader’s good behavior — positive and confident, which many companies prefer. Grammar Note: Formal phrase, gratitude expression. Example: “Thank you for your patience while we resolved the issue.” Best Use: Customer service emails, business updates. Worst Use: Situations where the reader was clearly frustrated. Tone: Professional, soft | Level: Intermediate | Similarity Score: 7/10 Tip: Choose this when you want to sound appreciative rather than apologetic.

I Appreciate Your Patience

Meaning: A close cousin of “thank you for your patience,” with a slightly more personal feeling. Explanation: Starting with “I” makes this version feel a touch warmer and more direct. Grammar Note: Formal phrase, first-person gratitude statement. Example: “I appreciate your patience as we work through this request.” Best Use: Business emails, workplace updates. Worst Use: Very casual chats. Tone: Professional, warm | Level: Intermediate | Similarity Score: 7/10 Tip: Use when you want a personal touch in a formal message.

Apologies for the Late Response

Meaning: A direct apology for replying later than expected. Explanation: Names the exact problem, which makes it clear and honest — works well after a reply took several days. Grammar Note: Formal noun phrase. Example: “Apologies for the late response; your email got buried in my inbox.” Best Use: Professional emails, follow-ups after a long gap. Worst Use: Spoken conversation. Tone: Formal, professional | Level: Intermediate | Similarity Score: 8/10 Tip: Use specifically for delayed replies, not delayed services or meetings.

I Appreciate You Waiting

Meaning: A gratitude-based phrase thanking the reader directly for their patience. Explanation: Feels personal and warm because it speaks directly to the reader’s action rather than describing patience as a general trait. Grammar Note: Formal-to-neutral gratitude phrase. Example: “I appreciate you waiting while we double-checked the numbers.” Best Use: Business emails, workplace communication. Worst Use: Very casual texting. Tone: Professional, warm | Level: Intermediate | Similarity Score: 7/10 Tip: Use to highlight gratitude instead of apology.

Apologies for Not Responding Sooner

Meaning: A clear, formal apology that focuses on timing. Explanation: Explains exactly what went wrong — the late timing — while staying professional and respectful. Grammar Note: Formal sentence-style phrase. Example: “Apologies for not responding sooner; I wanted to gather all the details first.” Best Use: Professional emails, workplace follow-ups. Worst Use: Quick informal messages. Tone: Formal, sincere | Level: Intermediate | Similarity Score: 8/10 Tip: Use when you also want to explain the reason for the delay.

Thanks for Your Understanding

Meaning: A phrase that thanks the reader for accepting the delay without complaint. Explanation: Focuses on the reader’s reaction rather than the delay itself, softening the message and ending on a positive note. Grammar Note: Formal-to-neutral gratitude phrase. Example: “Thanks for your understanding while we worked through the backlog.” Best Use: Business updates, group emails, official announcements. Worst Use: Situations where no understanding has actually been shown yet. Tone: Professional, soft | Level: Intermediate | Similarity Score: 6/10 Tip: Use near the end of a message, after explaining the delay.

Thank You for Bearing With Me

Meaning: A warm thank-you for someone’s patience during a difficult or slow process. Explanation: “Bearing with me” suggests the situation needed extra patience, not just a short wait — good for longer or more complicated delays. Grammar Note: Idiomatic phrase, formal-to-neutral. Example: “Thank you for bearing with me during this busy season.” Best Use: Professional emails, ongoing projects, ongoing customer support. Worst Use: Very short, simple delays. Tone: Warm, professional | Level: Advanced | Similarity Score: 7/10 Tip: Use for longer or more complex delays, not quick replies.

Informal / Casual Alternatives

Sorry for the Wait

Meaning: A short, simple apology for making someone wait. Explanation: The most casual cousin of the original phrase — keeps the same warmth but drops a few words for a faster read. Grammar Note: Informal short phrase, adjective plus noun. Example: “Sorry for the wait, here’s the file you asked for.” Best Use: Text messages, chats, friendly emails. Worst Use: Formal reports or legal correspondence. Tone: Friendly, neutral | Level: Beginner | Similarity Score: 9/10 Tip: Pick this when you want something quick and easy without sounding too formal.

Sorry for the Holdup

Meaning: A casual apology for causing a small delay. Explanation: “Holdup” is informal slang for a delay, often used in spoken English and casual writing — light and relaxed. Grammar Note: Informal noun, slang term. Example: “Sorry for the holdup, traffic was terrible this morning.” Best Use: Casual chats, text messages, informal workplace talk. Worst Use: Formal business emails. Tone: Casual, friendly | Level: Beginner | Similarity Score: 8/10 Tip: Save this for relaxed, everyday situations.

Thanks for Waiting

Meaning: A friendly way to acknowledge someone’s patience. Explanation: The casual sibling of “thank you for your patience” — light, relaxed, and quick. Grammar Note: Informal gratitude phrase. Example: “Thanks for waiting, I just finished the draft.” Best Use: Texts, chats, friendly emails. Worst Use: Formal reports or serious business apologies. Tone: Friendly, casual | Level: Beginner | Similarity Score: 7/10 Tip: Use for low-stakes delays among friends or relaxed coworkers.

Sorry for the Slow Reply

Meaning: An apology that focuses on the speed of your response, not the wait itself. Explanation: Highlights that your reply was slow, feeling honest and a little self-aware — people often appreciate the direct admission. Grammar Note: Informal-to-neutral phrase, adjective plus noun. Example: “Sorry for the slow reply, work has been hectic this week.” Best Use: Personal emails, casual workplace messages. Worst Use: Very formal client communication. Tone: Neutral, friendly | Level: Beginner | Similarity Score: 8/10 Tip: Pick this when you want to sound relatable and honest.

Sorry for the Long Wait

Meaning: An apology that points out the wait was longer than expected. Explanation: Adding “long” increases the weight of the apology, showing you understand the delay was significant. Grammar Note: Informal-to-neutral phrase. Example: “Sorry for the long wait, the system was down for maintenance.” Best Use: Customer service replies, workplace updates. Worst Use: Very short delays. Tone: Neutral, sincere | Level: Beginner | Similarity Score: 8/10 Tip: Use only when the wait truly was extended.

Sorry It Took Me So Long to Respond

Meaning: A personal, conversational apology for a slow reply. Explanation: Feels human and relatable because it admits the delay clearly and personally, without hiding behind formal language. Grammar Note: Informal sentence-style phrase. Example: “Sorry it took me so long to respond, things got busy at home.” Best Use: Personal emails, friendly workplace chats. Worst Use: Formal business writing. Tone: Friendly, sincere | Level: Beginner | Similarity Score: 9/10 Tip: Use when honesty and warmth matter more than polish.

Sorry for Keeping You on Hold

Meaning: An apology specifically for making someone wait during a call or live interaction. Explanation: Fits phone calls, live chats, and customer support more than written follow-ups, since “on hold” implies real-time waiting. Grammar Note: Neutral phrase, often spoken. Example: “Sorry for keeping you on hold, let me pull up your account now.” Best Use: Customer service calls, live chat support. Worst Use: Written email replies about delayed messages. Tone: Neutral, professional | Level: Beginner | Similarity Score: 7/10 Tip: Use only for live, real-time waiting situations.

Comparison Table of Best Alternatives

Mini Dialogue Examples

Formal dialogue:

Manager: “I apologize for the delay in reviewing your proposal.” Client: “No problem at all, I understand things get busy.” Manager: “Thank you for your patience. I will send my full feedback by tomorrow.”

Informal dialogue:

Friend A: “Hey, sorry for the wait! My phone died.” Friend B: “Haha, no worries, I just got here too.”

Sample Business Email

Dear Mr. Lee,

Apologies for the delayed response to your request. I have now reviewed the contract details and attached the updated version below.

Thank you for your patience, and please let me know if you have any questions.

Best regards, Sarah

Mistakes to Avoid

• Using overly casual phrases like “sorry for the holdup” in formal business emails.
• Repeating the same apology phrase multiple times in one email.
• Skipping the actual apology and jumping straight into “thank you for your patience” when the reader is clearly upset, which can feel dismissive.
• Using “I regret” for very minor delays, since it sounds overly dramatic.
• Forgetting to explain the reason for the delay when the situation calls for context.
• Mixing very formal phrases with casual sign-offs, which creates a confusing tone.
• Apologizing too many times in a row, since one clear, sincere line is usually enough.

Cultural and Regional Tone Tips

UK English: Apologies often sound understated and gentle. Phrases like “apologies for the delay” or “sorry for the hold-up” feel natural and are common even in everyday workplace chat.

US English: Directness is valued, so phrases like “thank you for your patience” or “I apologize for the wait time” are common in customer service and business writing, often paired with a quick explanation.

Casual/Social English: Especially in texts and direct messages, shorter and lighter phrases dominate. “Sorry for the wait!” or “thanks for waiting!” feel natural, friendly, and quick, without sounding overly serious.

Other Ways to Say Sorry to Keep You Waiting in an Email Sample

Waiting for a reply can sometimes be frustrating, especially in professional communication. If you couldn’t respond as quickly as expected, offering a sincere apology helps maintain a positive relationship. Instead of repeating the same phrase every time, you can use different expressions that sound polite, professional, and natural.

Here are some excellent alternatives to “Sorry to keep you waiting” in an email:

• Thank you for your patience.
• I appreciate your understanding.
• Apologies for the delay.
• Thank you for waiting.
• Sorry for the delay in getting back to you.
• I appreciate your continued patience.
• Thank you for bearing with me.
• Please accept my sincere apologies for the delay.
• Thank you for giving me the time to review this.
• I apologize for not responding sooner.

These alternatives focus on gratitude as well as accountability, making your message sound warmer and more professional.

Sample Email

Subject: Update Regarding Your Request

Dear Sarah,

Thank you for your patience while I reviewed your request. I appreciate your understanding, and I apologize for the delay in getting back to you.

After reviewing the information, I am pleased to confirm that everything has been approved. Please let me know if you have any additional questions.

Kind regards,

Michael Brown

Using positive language like “Thank you for your patience” often leaves a better impression than repeatedly apologizing.

Other Ways to Say Sorry to Keep You Waiting in an Email Example

Professional emails should sound respectful and considerate. If you have delayed a response, choosing the right wording can help maintain trust and professionalism.

Here are a few examples you can adapt.

Example 1

Dear Mr. Adams,

Thank you for waiting. I sincerely apologize for the delayed response. I wanted to ensure I had the correct information before replying.

Best regards,

Emma

Example 2

Hello Jennifer,

I appreciate your patience while I gathered the necessary details. Thank you for allowing me the extra time. Here is the information you requested.

Best,

Daniel

Example 3

Dear Team,

My apologies for the delay. Thank you for your understanding while we completed our internal review. We are now ready to move forward with the project.

Kind regards,

Jessica

These examples sound natural, courteous, and suitable for business communication.

Sorry to Have Kept You Waiting Meaning

The phrase “Sorry to have kept you waiting” is a polite apology used when someone has had to wait longer than expected. It acknowledges the delay and expresses regret for any inconvenience caused.

People commonly use this expression in customer service, business meetings, interviews, emails, and phone conversations.

For example:

“I am sorry to have kept you waiting. Thank you for your patience.”

This sentence tells the other person that you recognize they have waited and that you appreciate their understanding.

The expression is often preferred because it sounds more formal than simply saying “Sorry I’m late.” It also places emphasis on the inconvenience experienced by the other person.

You may also hear similar phrases such as:

• Sorry for the delay.
• Thank you for waiting.
• I appreciate your patience.
• Sorry for keeping you waiting.
• Thank you for bearing with us.

All of these communicate respect while acknowledging the delay.

Sorry for Keeping You Waiting Grammar Check

Yes, “Sorry for keeping you waiting” is grammatically correct.

It follows the standard English pattern:

Sorry for + verb (-ing) + object

Examples include:

• Sorry for interrupting you.
• Sorry for bothering you.
• Sorry for making you wait.
• Sorry for keeping you waiting.

Although it is grammatically correct, professional emails often sound more polished with slightly different wording.

For example:

• I apologize for keeping you waiting.
• Thank you for your patience.
• Please accept my apologies for the delay.
• I appreciate your understanding.

These alternatives are especially suitable for workplace communication because they sound more formal and courteous.

How to Say Sorry for the Late Reply Professionally

When replying late to an email, it’s important to acknowledge the delay without making unnecessary excuses. A brief, sincere apology followed by the requested information is usually the best approach.

Professional ways to apologize include:

• I apologize for my delayed response.
• Thank you for your patience.
• Sorry for the late reply.
• Please accept my apologies for responding later than expected.
• I appreciate your understanding.
• Thank you for waiting.
• I regret the delay in responding.
• I apologize for not getting back to you sooner.

Professional Email Example

Dear Alex,

Please accept my apologies for the delayed response. Thank you for your patience while I reviewed your request.

I have now completed the review and attached the requested documents. Please let me know if there is anything else I can assist you with.

Kind regards,

Emily Carter

Keeping the apology concise allows the focus to remain on solving the recipient’s issue.

I Will Be Waiting for Your Response Formal Email

The sentence “I will be waiting for your response” is understandable, but it can sound slightly demanding in professional emails.

Instead, consider these more polished alternatives:

• I look forward to your response.
• I look forward to hearing from you.
• I look forward to your feedback.
• I would appreciate your response at your earliest convenience.
• Please let me know your thoughts.
• I would appreciate your reply.
• I look forward to your update.
• I await your response.
• Thank you in advance for your reply.
• I appreciate your time and consideration.

Example

Dear Mr. Wilson,

Thank you for reviewing my application. I look forward to hearing from you regarding the next steps.

Kind regards,

James Taylor

These alternatives sound more natural and professional in business correspondence.

Sorry to Keep You Waiting Deltarune

The phrase “Sorry to keep you waiting” is widely recognised by fans of the video game Deltarune because it appears during an important moment in the game’s introduction. The line has become memorable within the gaming community and is frequently referenced in fan discussions, memes, videos, and online posts.

Outside the game, however, the expression is simply a common English phrase used to apologise after making someone wait. It remains appropriate in everyday conversations, customer service interactions, meetings, and professional emails.

So while Deltarune helped make the phrase popular among gamers, its original meaning is simply a polite apology for a delay.

We Are Waiting for Your Reply to Proceed Further

The sentence “We are waiting for your reply to proceed further” is grammatically understandable but sounds slightly awkward in formal English.

More natural alternatives include:

• We look forward to your reply so we can proceed.
• Once we receive your response, we will move forward.
• We await your response before proceeding.
• We would appreciate your prompt reply so we can continue.
• Please reply at your earliest convenience so we may proceed.
• We are ready to proceed once we receive your confirmation.
• Your response will allow us to move forward.
• Kindly let us know your decision so we can continue.

Professional Email Example

Dear Customer,

Thank you for your time. We are ready to proceed once we receive your confirmation. Please let us know your decision at your earliest convenience.

If you have any questions, feel free to contact us.

Kind regards,

Customer Support Team

Using these alternatives makes your emails sound more professional, courteous, and reader-friendly while encouraging a prompt response without sounding overly demanding.

Conclusion

Saying “sorry to keep you waiting” the same way every time can make your writing feel flat. Learning different alternatives helps you match your tone to the moment, whether you need something formal, friendly, or quick. It also makes your English sound more natural and confident, both in writing and in speech.

Try picking two or three phrases from this guide and practice using them in real emails or conversations this week. Small changes in word choice can make a big difference in how professional and thoughtful your message feels.

Riaz Ahmad

Riaz Ahmad is the founder and writer at DefineGrammar.com, dedicated to simplifying English grammar for students and writers worldwide. With a passion for language, he breaks down complex grammar rules into clear, practical lessons, helping readers write with confidence and clarity every day.