21+ Better Ways to Say “That’s So Cool” (Formal, Informal & Professional Alternatives)

Last updated: 7 August 2026

When something amazes us, “that’s so cool” is often the first thing out of our mouths. It’s quick and easy — but also very casual. In a business email or school essay, it can sound childish or out of place.

Quick contrast:

• Informal: “That’s so cool! I love it!”
• Formal: “That’s truly impressive work.”

Same feeling, different tone. This guide gives you 21 strong alternatives, when to use them, and how to avoid common mistakes.

What Does “That’s So Cool” Mean?

It’s an informal way to show excitement, approval, or admiration — something is great, interesting, or impressive in a fun, casual way.

• Grammar form: Informal exclamatory phrase, “cool” as adjective.
• Similar phrases: Awesome, amazing, fantastic, impressive, great.
• Opposite tone: Boring, dull, unimpressive, ordinary.

Example: “Did you see the new app? That’s so cool!”

When to Use It

Context	Fit
Spoken English	Natural and relaxed
Business English	Too casual — use “impressive” or “excellent”
Texts to friends	Perfect
Work emails	Can look unprofessional
Social media	Fits perfectly
Academic writing	Avoid — use “remarkable” or “noteworthy”
Professional meetings	Swap for “impressive” or “well done”

Is It Polite or Professional?

Tone Level	Rating
Politeness	Never rude
Neutrality	Leans casual
Strength	Soft, light
Formality	Clearly informal

Etiquette tip: Great for chats and texts. Avoid it in corporate emails, reports, or interviews — choose “impressive” or “well done” instead.

Pros and Cons

Pros: Easy to say, shows genuine excitement, common in everyday English.

Cons: Too casual for formal writing, can sound unprofessional in emails, may seem immature in business settings.

Alternatives to “That’s So Cool” — Explained

1. That’s Awesome

Meaning: Something is very good or exciting. Why it works: Same friendly energy as “cool” but slightly more enthusiastic. Example: “You finished the whole project early? That’s awesome!” Best for: Spoken English, texts, casual workplace chats. Tone: Friendly, informal | Level: Beginner

2. That’s Amazing

Meaning: Something is surprising and very impressive. Why it works: Works in casual and semi-formal settings without sounding childish. Example: “Your presentation was amazing. The team loved it.” Best for: Emails, social media, light professional talk. Tone: Neutral to friendly | Level: Beginner

3. That’s Incredible

Meaning: Something is hard to believe because it’s so good. Why it works: Adds disbelief and wonder — great for achievements or surprising news. Example: “She learned three languages in one year. That’s incredible.” Best for: Conversations, emails, presentations. Tone: Neutral, strong | Level: Intermediate

4. That’s Fantastic

Meaning: Something is excellent and pleasing. Why it works: Upbeat and positive — common in UK English and friendly professional settings. Example: “You fixed the bug already? Fantastic work!” Best for: Spoken English, friendly emails, team chats. Tone: Friendly, professional | Level: Beginner

5. That’s Impressive

Meaning: Something deserves respect because of skill or effort. Why it works: One of the safest professional alternatives — respectful without excess emotion. Example: “Your sales numbers this quarter are impressive.” Best for: Business meetings, performance reviews. Tone: Professional, neutral | Level: Intermediate

6. That’s Brilliant

Meaning: Something is extremely good or clever. Why it works: Very popular in UK English for ideas and clever work. Example: “Your idea for the new logo is brilliant.” Best for: Conversations, emails, creative feedback. Tone: Friendly, professional | Level: Intermediate

7. That’s Wonderful

Meaning: Something brings joy or happiness. Why it works: Warm and kind — great for celebrating good news. Example: “Congratulations on your promotion. That’s wonderful news.” Best for: Emails, congratulations messages. Tone: Warm, professional | Level: Beginner

8. That’s Fascinating

Meaning: Something is extremely interesting. Why it works: Focuses on interest rather than excitement — strong for intellectual conversation. Example: “The history behind this building is fascinating.” Best for: Academic writing, presentations, formal discussions. Tone: Formal, thoughtful | Level: Advanced

9. That’s Remarkable

Meaning: Something is unusual and worth noticing. Why it works: Highlights rarity or special progress — common in professional praise. Example: “Her progress this semester is remarkable.” Best for: Formal writing, reports, academic feedback. Tone: Formal, professional | Level: Advanced

10. That’s Outstanding

Meaning: Something is excellent and stands out from others. Why it works: Used in performance reviews and award ceremonies — top-level quality. Example: “Your essay was outstanding. Well done.” Best for: Academic feedback, workplace evaluations. Tone: Formal, strong | Level: Advanced

11. That’s Epic

Meaning: Something is amazing, exciting, or larger than life. Why it works: Popular among younger speakers and gamers — adds energy. Example: “That concert last night was epic!” Best for: Casual talk, social media, texts. Tone: Informal, energetic | Level: Beginner

12. That’s Wild

Meaning: Something is surprising, unusual, or shocking. Why it works: Expresses strong surprise — common when reacting to unexpected news. Example: “He quit his job to travel the world? That’s wild.” Best for: Conversations, casual messages. Tone: Informal, strong | Level: Intermediate

13. That’s Sick

Meaning: Something is extremely cool or impressive (slang). Why it works: Youth slang from skating, gaming, and music culture. Example: “Did you see that skateboard trick? That’s sick!” Best for: Friends, social media, casual spoken English. Tone: Very informal, energetic | Level: Beginner (slang)

14. That’s Dope

Meaning: Something is really cool or stylish (slang). Why it works: Rooted in hip-hop culture — fun, modern admiration. Example: “Your new sneakers are dope.” Best for: Social media, casual chats, friend groups. Tone: Very informal, trendy | Level: Beginner (slang)

15. That’s Neat

Meaning: Something is nice, clever, or pleasing. Why it works: Gentle and simple — common in American English for small pleasant surprises. Example: “You can fold the table like that? That’s neat.” Best for: Casual conversations, friendly emails. Tone: Friendly, soft | Level: Beginner

16. That’s Stunning

Meaning: Something is so impressive it’s almost shocking. Why it works: Powerful for describing beauty, design, or striking results. Example: “The view from the top was stunning.” Best for: Travel talk, design feedback, formal compliments. Tone: Strong, professional | Level: Intermediate

17. That’s Mind-Blowing

Meaning: Something is so amazing it’s hard to process. Why it works: Dramatic and strong — great for big discoveries or unbelievable facts. Example: “The size of the universe is mind-blowing.” Best for: Conversations, presentations, casual writing. Tone: Strong, energetic | Level: Intermediate

18. That’s Terrific

Meaning: Something is very good or pleasing. Why it works: Cheerful and warm — works well in friendly emails and spoken praise. Example: “Terrific job on the report. Thanks for the hard work.” Best for: Friendly emails, workplace praise. Tone: Friendly, professional | Level: Intermediate

19. That’s Exceptional

Meaning: Something is much better than usual. Why it works: Strong formal word — used in reviews and academic praise. Example: “The candidate’s interview skills were exceptional.” Best for: Formal feedback, academic writing, professional evaluations. Tone: Formal, strong | Level: Advanced

20. That’s Superb

Meaning: Something is of very high quality. Why it works: Polished and confident — common in reviews and formal praise. Example: “The chef prepared a superb meal for the event.” Best for: Reviews, formal compliments, professional writing. Tone: Formal, polished | Level: Advanced

21. That’s Commendable

Meaning: Something deserves praise or approval. Why it works: One of the most formal options — respectful, measured approval. Example: “Your effort to help new team members is commendable.” Best for: Formal emails, official reports, performance reviews. Tone: Formal, respectful | Level: Advanced

Mini Dialogue Examples

Formal: A: “I reviewed your proposal. The data analysis is exceptional.” B: “Thank you, we worked hard on it.” A: “It shows — this is commendable work overall.”

Informal: A: “Bro, check out this video. It’s so sick!” B: “Whoa, that’s wild! How did they do that?” A: “No idea, but it’s epic.”

Business email:

Subject: Great Work on the Launch

Hi Sarah, your work on the product launch was outstanding. The marketing plan was impressive, and the results were truly remarkable. Thank you for your effort.

Best regards, James

Mistakes to Avoid

• Using “that’s so cool” in formal emails or reports — swap for a more polished option.
• Mixing slang like “dope” or “sick” with formal words in the same sentence — creates a tone mismatch.
• Forgetting “cool” can sound childish in interviews — use “impressive” instead.
• Overusing strong words like “amazing” for small things — save them for real impact.
• Using British slang like “brilliant” in American formal writing without checking the audience.
• Choosing a word that doesn’t match the achievement — calling a small task “epic” feels off.

Cultural and Tone Notes

• UK English: “Brilliant” and “fantastic” are common even in semi-formal talk.
• US English: “Awesome,” “amazing,” and “cool” are everywhere; slang like “sick” and “dope” is popular with younger speakers.
• Casual/social English: Short, strong words like “epic” and “wild” spread fast online and show quick reactions.

Comparison Table: Top 5 Alternatives

Phrase	Tone	Best Context	Formality
That’s awesome	Friendly, informal	Spoken, texts	Low
That’s impressive	Professional, neutral	Meetings, emails	High
That’s remarkable	Formal, strong	Reports, reviews	High
That’s fantastic	Friendly, warm	Conversations, emails	Medium
That’s outstanding	Formal, strong	Evaluations, academics	High

Other Ways to Say That’s So Cool to a Guy

When you want to tell a guy that something he did is impressive, “that’s so cool” works, but using different expressions can make your response feel more genuine and memorable. The best phrase depends on your relationship and the situation. A casual compliment sounds different from one you’d use with a close friend, coworker, or someone you’re interested in.

Here are some natural alternatives:

• That’s awesome!
• That’s impressive.
• I love that.
• That’s seriously amazing.
• That’s pretty incredible.
• You’re really good at that.
• That’s next-level.
• That’s brilliant.
• You’ve got great taste.
• That’s a great idea.
• That’s honestly inspiring.
• I didn’t expect that—nice!
• That’s epic.
• Well done!
• That’s really something.

Using a specific compliment often feels more meaningful than simply saying “cool.” For example, instead of saying, “That’s cool,” you could say, “That’s an impressive achievement,” or “I really like how you handled that.” Personalized praise shows genuine interest and appreciation.

Other Ways to Say That’s So Cool in a Text

Text messages usually sound better when they’re casual, friendly, and expressive. Instead of repeating “that’s so cool,” try using fresh alternatives that match your personality and the conversation.

Popular text-friendly alternatives include:

• That’s awesome!
• Love that!
• So good!
• That’s amazing.
• No way—that’s incredible!
• That’s sick!
• That’s fire!
• That’s wild!
• That’s fantastic.
• That’s seriously cool.
• I’m impressed.
• That’s brilliant.
• That’s exciting!
• That’s a huge win!
• That’s actually amazing.

Adding emojis can also make your message feel warmer and more engaging.

Examples:

• That’s awesome! 🎉
• Love that for you!
• That’s amazing 😄
• You’re crushing it!
• That’s seriously impressive!

Choosing a phrase that matches the person’s achievement makes your message feel more authentic than using the same response every time.

What to Say Instead of Cool in Text

The word “cool” is one of the most common responses in texting, but using different words keeps conversations interesting. Depending on the situation, you can replace it with words that show excitement, admiration, approval, or encouragement.

Here are excellent alternatives:

• Awesome
• Amazing
• Great
• Fantastic
• Incredible
• Excellent
• Outstanding
• Nice
• Brilliant
• Wonderful
• Impressive
• Epic
• Sweet
• Perfect
• Fantastic
• Legendary
• Amazing stuff
• Love it
• That’s fantastic
• Sounds great

Examples:

• Cool, I’ll be there. → Sounds great, I’ll be there.
• Cool idea! → Brilliant idea!
• Cool photo! → Amazing photo!
• Cool work! → Impressive work!

Using varied vocabulary makes your texts sound more natural and engaging while expressing your emotions more clearly.

Other Ways to Say That’s So Cool Funny

Sometimes you want your reaction to make someone laugh while still showing excitement. Funny alternatives are perfect for friends, siblings, or anyone who enjoys playful conversations.

Here are some humorous expressions:

• That’s ridiculously awesome.
• Okay, that’s illegal levels of cool.
• You’re showing off now.
• Save some talent for the rest of us.
• That’s superhero material.
• I can’t compete with that.
• That’s unfairly impressive.
• You’re making the rest of us look bad.
• That’s cooler than free pizza.
• Well, that’s one way to flex.
• You’re officially winning.
• That’s comedy gold.
• That’s absolutely legendary.
• I’m jealous now.
• That’s too good!

These playful responses add personality to conversations while making your compliment feel more memorable and entertaining.

What to Say Instead of Nice in Text

“Nice” is another word that people use frequently in everyday conversations. While it’s polite, it can sometimes sound plain or repetitive. Choosing a more descriptive alternative helps your message stand out.

Better alternatives include:

• Great
• Excellent
• Wonderful
• Fantastic
• Amazing
• Outstanding
• Impressive
• Perfect
• Beautiful
• Lovely
• Brilliant
• Awesome
• Incredible
• Terrific
• Exceptional

Examples:

• Nice picture! → Beautiful picture!
• Nice work! → Outstanding work!
• Nice idea! → Brilliant idea!
• Nice choice! → Great choice!
• Nice job! → Fantastic job!

Selecting the right word makes your appreciation sound more sincere and thoughtful.

Another Word for Cool Person

A cool person is someone who is confident, friendly, admired, or enjoyable to be around. Different synonyms highlight different qualities, so choose the one that best fits the context.

Here are some excellent alternatives:

• Charismatic
• Stylish
• Trendy
• Confident
• Popular
• Friendly
• Easygoing
• Charming
• Inspiring
• Attractive
• Likeable
• Magnetic
• Influential
• Remarkable
• Interesting
• Fun-loving
• Laid-back
• Genuine
• Creative
• Respectable

Example sentences:

• She’s a really charismatic person.
• He’s incredibly easygoing and friendly.
• Everyone thinks she’s inspiring.
• He’s one of the most likeable people I know.
• She’s confident without being arrogant.

These words describe different aspects of what people often mean when they call someone “cool.”

That’s Cool Meaning

The phrase “that’s cool” is an informal expression used to show approval, agreement, admiration, or acceptance. It is one of the most common conversational responses in English and can have slightly different meanings depending on the context.

For example:

• If someone shares good news, “That’s cool!” means “That’s great!” or “I’m happy for you.”
• If someone suggests a plan, “That’s cool” can mean “I’m okay with that.”
• If someone shows you something interesting, it means “That’s impressive” or “I like it.”

Examples:

• I got tickets to the concert.
  That’s cool!
• We can meet tomorrow instead.
  That’s cool with me.
• Check out this new design.
  Wow, that’s really cool!

Because the phrase is informal, it’s best suited for casual conversations with friends, classmates, family members, or coworkers.

Another Word for Cool or Awesome

Both “cool” and “awesome” express admiration, excitement, or approval. Expanding your vocabulary allows you to sound more expressive and avoid repeating the same words.

Strong alternatives include:

• Amazing
• Fantastic
• Incredible
• Brilliant
• Outstanding
• Excellent
• Impressive
• Extraordinary
• Spectacular
• Remarkable
• Wonderful
• Epic
• Marvelous
• Exceptional
• Superb
• Stunning
• Fabulous
• Phenomenal
• Terrific
• First-rate

Each word carries a slightly different tone. “Phenomenal” and “extraordinary” are stronger and more formal, while “epic,” “awesome,” and “fantastic” work well in casual conversations. Choosing the right synonym helps you communicate enthusiasm naturally while making your writing and speech more engaging.

Frequently Asked Questions

What can I say instead of “that’s so cool”?

Instead of saying “that’s so cool,” you can use expressions like that’s awesome, that’s amazing, that’s impressive, that’s incredible, or that’s fantastic. These alternatives sound natural and help you express excitement in both casual and professional conversations.

How does Gen Z say that’s cool?

Gen Z often uses phrases like that’s fire, that’s sick, that’s dope, that’s a W, that’s iconic, or I’m obsessed. These trendy expressions are popular on social media and in everyday conversations to show admiration or excitement.

How do you say “so cool” in different ways?

You can say super impressive, incredibly awesome, seriously amazing, absolutely brilliant, really stylish, or next level instead of “so cool.” Choosing different expressions makes your speech sound more engaging and avoids repeating the same phrase.

How do you say “that’s cool” in slang?

Common slang alternatives include that’s lit, that’s fire, that’s hard, that’s clean, that’s sweet, that’s legit, or that’s epic. These phrases are widely used in informal conversations to show approval, excitement, or appreciation.

What can I say instead of “very cool”?

Instead of “very cool,” try saying extremely impressive, absolutely awesome, incredibly nice, really amazing, genuinely impressive, or totally fantastic. These expressions add more enthusiasm and make your compliments sound stronger and more natural.

How does Gen Alpha say cool?

Gen Alpha often uses internet-inspired words like sigma, skibidi, aura, W, cooked, or goated, depending on the context and current trends. Their slang changes quickly, so many expressions come from gaming, memes, and viral videos rather than traditional everyday language.

Conclusion

“That’s so cool” is a fun, friendly phrase, but English offers many ways to show excitement — from simple words like “awesome” to formal choices like “commendable.” Using the right word builds clarity and confidence.

Try a few new alternatives in your daily conversations and writing. Small changes in word choice can make a big difference in how others respond to you.