cool

/ku:l/
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cool

A cool breeze blows through the open window on a summer day.

Definition

  1. Adjective:

    • Slightly cold; pleasantly refreshing: Refers to a moderately low temperature that is comfortable, not warm.
    • Calm and controlled: Describes a person who remains composed, unemotional, or not easily excited, especially under pressure.
    • Unfriendly or lacking enthusiasm: Indicates a manner that is not warm, friendly, or enthusiastic.
    • Fashionable and attractive: (Informal) Describes something or someone that is stylish, impressive, or socially adept.
    • Without exaggeration; complete: (Informal, used before a sum of money) Emphasizes the full, often surprisingly large, amount.

  2. Noun:

    • A low, comfortable temperature: Refers to a cool state or the cool part of something, like the evening.
    • Calmness and composure: Refers to the state of being calm and self-controlled.

  3. Verb:

    • To become or make cooler: To lower in temperature or to become less warm.
    • To become or make less intense: To reduce in emotional intensity, enthusiasm, or interest.
Usage and Examples
  • Adjective (Temperature):
    • A cool breeze made the summer evening pleasant.
    • She prefers a cool room for sleeping.
  • Adjective (Calm):
    • He stayed cool during the emergency.
    • You need to keep a cool head when negotiating.
  • Adjective (Unfriendly):
    • She was very cool towards her new colleagues.
    • The proposal received a cool response from the board.
  • Adjective (Fashionable):
    • Those are really cool shoes.
    • It's cool to be environmentally conscious.
  • Adjective (Complete sum):
    • The car cost him a cool fifty thousand dollars.
  • Noun (Temperature):
    • We sat in the cool of the shade.
    • I enjoy the cool of the early morning.
  • Noun (Composure):
    • He lost his cool when the computer crashed.
  • Verb (Temperature):
    • The soup will cool quickly.
    • Cool the drinks in the refrigerator.
  • Verb (Intensity):
    • Her interest in the project cooled after the first month.
    • His anger finally cooled down.
Advanced Usage and Idioms
  • Play it cool: To act calm and not show one's true feelings, especially nervousness or excitement.
    • Even though he was nervous, he tried to play it cool during the interview.
  • Cool as a cucumber: Extremely calm and relaxed, especially in a difficult situation.
    • Before the big speech, she was as cool as a cucumber.
  • Cool your heels: To be kept waiting, often for a long time.
    • I had to cool my heels in the lobby for an hour.
  • Cool down/off:
    • (Literal) To become cooler in temperature.
      • Let the engine cool down before you check the oil.
    • (Figurative) To become less angry or excited.
      • He went for a walk to cool off after the argument.
Variants and Related Words
  • Coolly (adverb): In a calm and unemotional manner.
    • She coolly dismissed the criticism.
  • Coolness (noun):
    • The state of being cool in temperature.
      • the coolness of the cellar
    • The quality of being calm and composed.
      • He admired her coolness under fire.
    • A lack of warmth or friendliness.
      • There was a noticeable coolness in their greeting.
  • Coolant (noun): A fluid used to cool an engine or system.
  • Cool-headed (adjective): Not easily excited or confused; calm.
    • A cool-headed leader is essential in a crisis.
Synonyms
  • Chilly, refreshing (for temperature).
  • Calm, composed, collected, unflappable (for demeanor).
  • Aloof, distant, unfriendly (for manner).
  • Stylish, hip, trendy (informal, for fashionable).
Antonyms
  • Warm, hot (for temperature).
  • Agitated, excited, nervous (for demeanor).
  • Friendly, warm, enthusiastic (for manner).
  • Uncool, unfashionable (informal).
cool

A cool breeze blows through the open window on a summer day.

Adjective
  1. fashionable and attractive at the time; often skilled or socially adept
    • he's a cool dude
    • that's cool
    • Mary's dress is really cool
    • it's not cool to arrive at a party too early
  2. (used of a number or sum) without exaggeration or qualification
    • a cool million bucks
  3. psychologically cool and unenthusiastic; unfriendly or unresponsive or showing dislike
    • relations were cool and polite
    • a cool reception
    • cool to the idea of higher taxes
  4. (color) inducing the impression of coolness; used especially of greens and blues and violets
    • cool greens and blues and violets
  5. marked by calm self-control (especially in trying circumstances); unemotional
    • play it cool
    • keep cool
    • stayed coolheaded in the crisis
    • the most nerveless winner in the history of the tournament
  6. neither warm nor very cold; giving relief from heat
    • a cool autumn day
    • a cool room
    • cool summer dresses
    • cool drinks
    • a cool breeze
Noun
  1. great coolness and composure under strain
    • keep your cool
  2. the quality of being at a refreshingly low temperature
    • the cool of early morning
Verb
  1. lose intensity
    • His enthusiasm cooled considerably
  2. loose heat
    • The air cooled considerably after the thunderstorm
  3. make cool or cooler
    • Chill the food

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