The phrase “how cool” is a common English expression used to show excitement, admiration, surprise, or approval. People often say it when they see something interesting, impressive, or enjoyable.
While this phrase is easy to use, repeating it too often can make your English sound limited.
Learning other ways to say “how cool” helps you sound more natural, fluent, and confident. Different situations require different expressions. Some alternatives work better in professional settings, while others are perfect for casual conversations with friends.
In this guide, you’ll learn 34+ synonyms for “how cool”, including formal and informal alternatives. You’ll also discover when to use each phrase, what tone it creates, and examples to help you use them correctly in everyday communication.
What Does “How Cool” Mean?
“How cool” is an exclamation used to express admiration, excitement, approval, or amazement.
Grammar Explanation
The phrase usually follows the pattern:
How + adjective
Examples:
- How cool!
- How amazing!
- How wonderful!
It is commonly used as an exclamation rather than a complete sentence.
Example:
“You’re going to Japan next month? How cool!“
When to Use “How Cool”
You can use “how cool” in many situations:
Informal Conversations
- Talking with friends
- Social media comments
- Text messages
Spoken English
- Reacting to news
- Showing excitement
- Expressing admiration
Written English
- Casual emails
- Online chats
- Blog comments
Professional Contexts
It can sometimes be used in relaxed workplaces, but it may sound too casual for formal business communication.
Is It Professional or Polite to Say “How Cool”?
“How cool” is polite and friendly, but it is usually considered informal.
In professional settings, alternatives such as:
- That’s impressive
- That’s remarkable
- That’s excellent
- That’s outstanding
often sound more appropriate.
For casual workplace conversations, “how cool” is usually acceptable, especially in modern and creative industries.
Pros and Cons of Using “How Cool”
Pros
- Easy to understand
- Friendly and positive
- Shows enthusiasm
- Common in everyday English
- Suitable for casual conversations
Cons
- Can sound repetitive
- Too informal for some business situations
- May seem immature in formal writing
- Lacks variety in professional communication
34+ Other Ways to Say “How Cool”
1. That’s Awesome
Meaning: Very impressive or exciting.
Explanation: A popular casual expression.
Example Sentence: That’s awesome! I can’t wait to see it.
Best Use: Casual, Informal
Worst Use: Formal reports
Tone: Friendly
2. That’s Amazing
Meaning: Extremely impressive.
Explanation: Shows strong admiration.
Example Sentence: That’s amazing! You did a great job.
Best Use: Formal, Informal
Worst Use: Serious criticism
Tone: Positive
3. That’s Incredible
Meaning: Hard to believe because it is so impressive.
Explanation: Expresses strong surprise.
Example Sentence: That’s incredible news.
Best Use: Spoken, Written
Worst Use: Minor achievements
Tone: Emphatic
4. That’s Fantastic
Meaning: Extremely good.
Explanation: A cheerful alternative.
Example Sentence: That’s fantastic work.
Best Use: Business, Casual
Worst Use: Negative situations
Tone: Positive
5. That’s Wonderful
Meaning: Very pleasing or delightful.
Explanation: Sounds warm and polite.
Example Sentence: That’s wonderful to hear.
Best Use: Formal, Personal
Worst Use: Trendy slang contexts
Tone: Warm
6. That’s Impressive
Meaning: Worth admiration.
Explanation: Excellent professional alternative.
Example Sentence: That’s impressive progress.
Best Use: Business
Worst Use: Casual jokes
Tone: Professional
7. That’s Remarkable
Meaning: Unusually good.
Explanation: More formal than “cool.”
Example Sentence: That’s a remarkable achievement.
Best Use: Formal
Worst Use: Casual texting
Tone: Formal
8. That’s Outstanding
Meaning: Exceptionally good.
Explanation: Common in workplace praise.
Example Sentence: That’s outstanding performance.
Best Use: Professional
Worst Use: Informal chatting
Tone: Formal
9. That’s Brilliant
Meaning: Extremely clever or excellent.
Explanation: Common in British English.
Example Sentence: That’s a brilliant idea.
Best Use: Formal, Casual
Worst Use: Tragic situations
Tone: Positive
10. That’s Excellent
Meaning: Of very high quality.
Explanation: Professional and respectful.
Example Sentence: That’s excellent work.
Best Use: Business
Worst Use: Casual excitement
Tone: Formal
11. That’s Great
Meaning: Very good.
Explanation: One of the safest alternatives.
Example Sentence: That’s great news.
Best Use: All contexts
Worst Use: None
Tone: Neutral
12. That’s Neat
Meaning: Interesting or attractive.
Explanation: Mild expression of approval.
Example Sentence: That’s neat.
Best Use: Casual
Worst Use: Formal presentations
Tone: Friendly
13. That’s Nice
Meaning: Pleasant and enjoyable.
Explanation: Common everyday phrase.
Example Sentence: That’s nice to hear.
Best Use: Everyday conversations
Worst Use: Major accomplishments
Tone: Neutral
14. That’s Epic
Meaning: Extremely exciting.
Explanation: Popular among younger speakers.
Example Sentence: That’s epic!
Best Use: Informal
Worst Use: Corporate emails
Tone: Enthusiastic
15. That’s Stunning
Meaning: Extremely beautiful or impressive.
Explanation: Often used for visual things.
Example Sentence: That’s a stunning design.
Best Use: Creative industries
Worst Use: Small achievements
Tone: Strong
16. That’s Spectacular
Meaning: Extremely impressive.
Explanation: Strong positive praise.
Example Sentence: That’s spectacular work.
Best Use: Formal, Casual
Worst Use: Routine tasks
Tone: Emphatic
17. That’s Marvelous
Meaning: Wonderful and impressive.
Explanation: Sounds elegant and refined.
Example Sentence: That’s marvelous.
Best Use: Formal
Worst Use: Youth slang conversations
Tone: Polite
18. That’s Exceptional
Meaning: Better than normal.
Explanation: Strong professional compliment.
Example Sentence: That’s exceptional quality.
Best Use: Business
Worst Use: Casual texting
Tone: Formal
19. That’s First-Class
Meaning: Of the highest quality.
Explanation: Indicates excellence.
Example Sentence: That’s first-class service.
Best Use: Professional
Worst Use: Everyday chat
Tone: Formal
20. That’s Top-Notch
Meaning: Excellent quality.
Explanation: Common in business and casual speech.
Example Sentence: That’s top-notch work.
Best Use: Business, Casual
Worst Use: Academic writing
Tone: Positive
21. That’s Extraordinary
Meaning: Very unusual and impressive.
Explanation: Strong formal praise.
Example Sentence: That’s an extraordinary achievement.
Best Use: Formal
Worst Use: Minor events
Tone: Formal
22. That’s Fascinating
Meaning: Extremely interesting.
Explanation: Focuses on interest rather than admiration.
Example Sentence: That’s fascinating research.
Best Use: Academic, Professional
Worst Use: Simple compliments
Tone: Professional
23. That’s Inspiring
Meaning: Motivates others.
Explanation: Shows admiration.
Example Sentence: That’s inspiring to hear.
Best Use: Personal, Professional
Worst Use: Ordinary updates
Tone: Positive
24. That’s Wonderful News
Meaning: Very positive news.
Explanation: Common polite response.
Example Sentence: That’s wonderful news.
Best Use: Formal, Informal
Worst Use: Negative situations
Tone: Warm
25. How Exciting
Meaning: Full of excitement.
Explanation: Similar structure to “how cool.”
Example Sentence: How exciting! Congratulations.
Best Use: Spoken English
Worst Use: Serious meetings
Tone: Enthusiastic
26. How Amazing
Meaning: Extremely impressive.
Explanation: Direct replacement.
Example Sentence: How amazing!
Best Use: Casual, Semi-formal
Worst Use: Technical reports
Tone: Positive
27. How Wonderful
Meaning: Very delightful.
Explanation: Sounds warm and kind.
Example Sentence: How wonderful!
Best Use: Formal, Personal
Worst Use: Slang-heavy conversations
Tone: Polite
28. What a Great Idea
Meaning: Excellent suggestion.
Explanation: Specifically praises ideas.
Example Sentence: What a great idea!
Best Use: Meetings
Worst Use: Non-idea situations
Tone: Positive
29. I Love That
Meaning: Strong approval.
Explanation: Common in conversation.
Example Sentence: I love that.
Best Use: Casual
Worst Use: Formal evaluations
Tone: Friendly
30. That’s So Interesting
Meaning: Captures attention.
Explanation: Focuses on curiosity.
Example Sentence: That’s so interesting.
Best Use: Discussions
Worst Use: Performance reviews
Tone: Neutral
31. That’s Mind-Blowing
Meaning: Extremely surprising.
Explanation: Strong informal reaction.
Example Sentence: That’s mind-blowing.
Best Use: Casual
Worst Use: Formal documents
Tone: Emphatic
32. That’s Unreal
Meaning: Difficult to believe.
Explanation: Popular slang expression.
Example Sentence: That’s unreal!
Best Use: Informal
Worst Use: Professional writing
Tone: Casual
33. That’s Legendary
Meaning: Exceptionally impressive.
Explanation: Popular among younger speakers.
Example Sentence: That’s legendary.
Best Use: Casual
Worst Use: Corporate communication
Tone: Enthusiastic
34. That’s Phenomenal
Meaning: Extraordinary and outstanding.
Explanation: Strong praise.
Example Sentence: That’s phenomenal work.
Best Use: Professional, Casual
Worst Use: Minor achievements
Tone: Strong
35. That’s Wonderful Work
Meaning: Excellent job.
Explanation: A warm compliment.
Example Sentence: That’s wonderful work.
Best Use: Professional, Educational
Worst Use: Casual slang conversations
Tone: Positive
Comparison Table: Top Alternatives to “How Cool”
| Alternative | Tone | Formality | Best Context |
|---|---|---|---|
| That’s Amazing | Positive | Medium | General conversations |
| That’s Impressive | Professional | High | Business meetings |
| That’s Outstanding | Formal | High | Workplace praise |
| That’s Awesome | Friendly | Low | Casual conversations |
| That’s Brilliant | Positive | Medium | Ideas and solutions |
| That’s Incredible | Emphatic | Medium | Exciting news |
| That’s Excellent | Professional | High | Reports and evaluations |
FAQs
1. What is the best formal alternative to “how cool”?
That’s impressive, that’s remarkable, and that’s outstanding are excellent formal alternatives.
2. What can I say instead of “how cool” in business communication?
Use phrases such as that’s excellent, that’s exceptional, or that’s impressive.
3. Is “that’s awesome” professional?
Usually no. It is friendly and informal, although some modern workplaces may accept it.
4. Which alternative shows the most excitement?
That’s mind-blowing, that’s incredible, and that’s phenomenal express strong excitement.
5. Can I use “how cool” in emails?
Yes, but mainly in informal emails. For professional emails, choose more formal alternatives.
Conclusion
Learning other ways to say “how cool” can greatly improve your English communication skills. Different situations require different levels of formality, and using varied expressions helps you sound more natural, confident, and fluent.
Whether you choose professional phrases like “that’s impressive” or casual expressions like “that’s awesome,” expanding your vocabulary gives you more flexibility when speaking and writing. Practice these alternatives regularly, and you’ll find it easier to express admiration, excitement, and appreciation in any context.
I’m Justin Harper, an English grammar enthusiast and content writer passionate about helping learners improve vocabulary, writing, and communication skills through simple, accurate, and engaging educational content at EnglishBlasts.
