COOLEST Synonyms: 688 Similar and Opposite Words

Q: How is the word 'cool' different from other adjectives like it?

Some common synonyms of cool are collected , composed , imperturbable , nonchalant , and unruffled . While all these words mean "free from agitation or excitement," cool may imply calmness, deliberateness, or dispassionateness. // kept a cool head

Q: Where would 'collected' be a reasonable alternative to 'cool'?

The words collected and cool can be used in similar contexts, but collected implies a concentration of mind that eliminates distractions especially in moments of crisis. // the nurse stayed calm and collected

Q: When is 'composed' a more appropriate choice than 'cool'?

While in some cases nearly identical to cool , composed implies freedom from agitation as a result of self-discipline or a sedate disposition. // the composed pianist gave a flawless concert

Q: When can 'imperturbable' be used instead of 'cool'?

Although the words imperturbable and cool have much in common, imperturbable implies coolness or assurance even under severe provocation. // the speaker remained imperturbable despite the heckling

Q: When is it sensible to use 'nonchalant' instead of 'cool'?

The meanings of nonchalant and cool largely overlap; however, nonchalant stresses an easy coolness of manner or casualness that suggests indifference or unconcern. // a nonchalant driver

Q: When might 'unruffled' be a better fit than 'cool'?

In some situations, the words unruffled and cool are roughly equivalent. However, unruffled suggests apparent serenity and poise in the face of setbacks or in the midst of excitement. // harried but unruffled

Q: How is the word 'cool' different from other adjectives like it?

Some common synonyms of cool are collected , composed , imperturbable , nonchalant , and unruffled . While all these words mean "free from agitation or excitement," cool may imply calmness, deliberateness, or dispassionateness. // kept a cool head

Q: Where would 'collected' be a reasonable alternative to 'cool'?

The words collected and cool can be used in similar contexts, but collected implies a concentration of mind that eliminates distractions especially in moments of crisis. // the nurse stayed calm and collected

Q: When is 'composed' a more appropriate choice than 'cool'?

While in some cases nearly identical to cool , composed implies freedom from agitation as a result of self-discipline or a sedate disposition. // the composed pianist gave a flawless concert

Q: When can 'imperturbable' be used instead of 'cool'?

Although the words imperturbable and cool have much in common, imperturbable implies coolness or assurance even under severe provocation. // the speaker remained imperturbable despite the heckling

cool 1 of 3

adjective

ˈkül

Definition of cool next

as in stylish

slang being in the latest or current fashion had a cool new hairstyle

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in distant

having or showing a lack of friendliness or interest in others the locals were cool towards outsiders the schoolmaster's cool manner did not encourage chitchat

Synonyms & Similar Words

Antonyms & Near Antonyms

as in calm

free from emotional or mental agitation in a crisis keep a cool head, even if no one else is

Synonyms & Similar Words

Antonyms & Near Antonyms

as in cold

having a low or subnormal temperature a cool basement that would be perfect for storing wine

Synonyms & Similar Words

Antonyms & Near Antonyms

as in icy

lacking in friendliness or warmth of feeling directed a cool glance at the student who was sneaking into class late

Synonyms & Similar Words

Antonyms & Near Antonyms

as in downtown

slang keenly aware of and responsive to the latest developments especially in fashion and entertainment a Greek island that's the current favorite of the cool crowd

Synonyms & Similar Words

Antonyms & Near Antonyms

as in awesome

slang of the very best kind a really cool garage band that's starting to get some attention from the music industry

Synonyms & Similar Words

Antonyms & Near Antonyms

cool

2 of 3

verb

as in to chill

to cause to lose heat cool your drinks in the icy mountain stream

Synonyms & Similar Words

Antonyms & Near Antonyms

as in to hush

to become still and orderly after the recess, tempers had cooled, and we could have a civil, rational discussion

Synonyms & Similar Words

Antonyms & Near Antonyms

cool

3 of 3

noun

as in detachment

the absence of emotional involvement the judge's customary cool stood her in good stead during the sensational trial

Synonyms & Similar Words

Antonyms & Near Antonyms

as in fashionableness

the quality or state of being fashionable a designer who was the arbiter of cool

Synonyms & Similar Words

Antonyms & Near Antonyms

as in composure

evenness of emotions or temper despite the flood of insults, the fledgling stand-up comic never lost his cool

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

How is the word cool different from other adjectives like it?

Some common synonyms of cool are collected, composed, imperturbable, nonchalant, and unruffled. While all these words mean "free from agitation or excitement," cool may imply calmness, deliberateness, or dispassionateness.

kept a cool head

Where would collected be a reasonable alternative to cool?

The words collected and cool can be used in similar contexts, but collected implies a concentration of mind that eliminates distractions especially in moments of crisis.

the nurse stayed calm and collected

When is composed a more appropriate choice than cool?

While in some cases nearly identical to cool, composed implies freedom from agitation as a result of self-discipline or a sedate disposition.

the composed pianist gave a flawless concert

When can imperturbable be used instead of cool?

Although the words imperturbable and cool have much in common, imperturbable implies coolness or assurance even under severe provocation.

the speaker remained imperturbable despite the heckling

When is it sensible to use nonchalant instead of cool?

The meanings of nonchalant and cool largely overlap; however, nonchalant stresses an easy coolness of manner or casualness that suggests indifference or unconcern.

a nonchalant driver

When might unruffled be a better fit than cool?

In some situations, the words unruffled and cool are roughly equivalent. However, unruffled suggests apparent serenity and poise in the face of setbacks or in the midst of excitement.

harried but unruffled

How is the word cool different from other adjectives like it?

kept a cool head

Where would collected be a reasonable alternative to cool?

The words collected and cool can be used in similar contexts, but collected implies a concentration of mind that eliminates distractions especially in moments of crisis.

the nurse stayed calm and collected

When is composed a more appropriate choice than cool?

While in some cases nearly identical to cool, composed implies freedom from agitation as a result of self-discipline or a sedate disposition.

the composed pianist gave a flawless concert

When can imperturbable be used instead of cool?

Although the words imperturbable and cool have much in common, imperturbable implies coolness or assurance even under severe provocation.

the speaker remained imperturbable despite the heckling

When is it sensible to use nonchalant instead of cool?

The meanings of nonchalant and cool largely overlap; however, nonchalant stresses an easy coolness of manner or casualness that suggests indifference or unconcern.

a nonchalant driver

When might unruffled be a better fit than cool?

In some situations, the words unruffled and cool are roughly equivalent. However, unruffled suggests apparent serenity and poise in the face of setbacks or in the midst of excitement.

harried but unruffled

How is the word cool different from other adjectives like it?

kept a cool head

Where would collected be a reasonable alternative to cool?

The words collected and cool can be used in similar contexts, but collected implies a concentration of mind that eliminates distractions especially in moments of crisis.

the nurse stayed calm and collected

When is composed a more appropriate choice than cool?

While in some cases nearly identical to cool, composed implies freedom from agitation as a result of self-discipline or a sedate disposition.

the composed pianist gave a flawless concert

When can imperturbable be used instead of cool?

Although the words imperturbable and cool have much in common, imperturbable implies coolness or assurance even under severe provocation.

the speaker remained imperturbable despite the heckling

When is it sensible to use nonchalant instead of cool?

The meanings of nonchalant and cool largely overlap; however, nonchalant stresses an easy coolness of manner or casualness that suggests indifference or unconcern.

a nonchalant driver

When might unruffled be a better fit than cool?

In some situations, the words unruffled and cool are roughly equivalent. However, unruffled suggests apparent serenity and poise in the face of setbacks or in the midst of excitement.

harried but unruffled

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of cool

Adjective

Friday's cold front brought cool temperatures, which will stay in the forecast on Saturday. —

Lauren Bostwick, CBS News, 28 Mar. 2026 That’s a pretty cool plot twist. —

Los Angeles Times, 28 Mar. 2026

Verb

The upfront cost can pay for itself by reducing what your heating and cooling system has to do. —

Fort Worth Star-Telegram, 30 Mar. 2026 Daytime highs should remain in the high 70s to low 80s while most nights will cool into the low 70s. —

Bill Kearney, Sun Sentinel, 30 Mar. 2026

Noun

Cold weather is fading and several mild days are in the First Alert Forecast ahead of the next cool-down. —

Cutter Martin, CBS News, 19 Mar. 2026 The set—which includes a bedspread and two pillow shams—features coin-pattern stitching and cool-to-the-touch material that’s machine washable. —

Mariana Best, Better Homes & Gardens, 12 Mar. 2026 See All Example Sentences for cool

Recent Examples of Synonyms for cool

Adjective

The ballet flat silhouette is stylish.

— Alex Sales, Glamour, 27 Mar. 2026
Set in a secluded Catalonian villa, the irksomely stylish story centers on a rich family living in insulated excess until an outsider disrupts their precarious peace.

— Alison Foreman, IndieWire, 27 Mar. 2026

Definition of stylish

Cite this Entry

Style

“Cool.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/cool. Accessed 1 Apr. 2026.

Copy Citation

Synonyms of cool

adjective

verb

noun

Synonym Chooser

Example Sentences

Browse Nearby Words

8 Words for Introverts

Cite this Entry

More from Merriam-Webster on cool

More from Merriam-Webster

Word of the Day

shenanigans

Popular in Grammar & Usage

5 Verbal Slip Ups and Language Mistakes

Are You Misusing These 10 Common Words?

Is that lie 'bald-faced' or 'bold-faced'?

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

12 Words for Signs of Spring

The Opposite of Déjà Vu

Why do we say 'fly off the handle'?

Why do we call it a 'flea market'?

17 Words for Dog Breeds

Popular

5 Verbal Slip Ups and Language Mistakes

12 Words for Signs of Spring

The Opposite of Déjà Vu

Games & Quizzes

Synonyms of cool

adjective

verb

noun

Synonym Chooser

Example Sentences

Phrases Containing cool

Browse Nearby Words

Articles Related to cool

8 Words for Introverts

Cite this Entry

More from Merriam-Webster on cool

More from Merriam-Webster

Word of the Day

shenanigans

Popular in Grammar & Usage

5 Verbal Slip Ups and Language Mistakes

Are You Misusing These 10 Common Words?

Is that lie 'bald-faced' or 'bold-faced'?

The Difference Between 'i.e.' and 'e.g.'

Why is '-ed' sometimes pronounced at the end of a word?

Popular in Wordplay

12 Words for Signs of Spring

The Opposite of Déjà Vu

Why do we say 'fly off the handle'?

Why do we call it a 'flea market'?

17 Words for Dog Breeds

Popular

5 Verbal Slip Ups and Language Mistakes

12 Words for Signs of Spring

The Opposite of Déjà Vu

Games & Quizzes