Other spellings

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  • (nonstandard slang) kewl

Pronunciation

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Adjective

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Positive
cool

Comparative
cooler

Superlative
coolest

  1. If something is cool, its temperature is between warm and cold.
    It's hard to keep the house nice and cool on a hot summer's day.
    The air was cool, so he put on his jacket.
  2. If you say something is cool you mean it is good and you like it.
    That's a really cool cell phone! Where did you get it?
    Wow, your computer looks cool!
  3. Someone who is cool is admired by others, someone of notably high social status.
    Jeffrey is the coolest guy in town.

Plain form
cool

Third-person singular
cools

Past tense
cooled

Past participle
cooled

Present participle
cooling

  1. (transitive & intransitive) If you cool something, you decrease the temperature.
    Blow on the coffee to cool it off.
  2. (transitive & intransitive) If something cools, its temperature decreases.
    The soup was too hot, so he waited for it to cool a little.