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1

cool

play
adjective \ˈkül\

Simple Definition of cool

  • : somewhat cold : not warm or hot

  • : made of a light, thin material that helps you stay cool

  • : able to think and act in a calm way : not affected by strong feelings

Source: Merriam-Webster's Learner's Dictionary

Full Definition of cool

  1. 1 :  moderately cold :  lacking in warmth

  2. 2 a :  marked by steady dispassionate calmness and self-control <a cool and calculating administrator — Current Biography> b :  lacking ardor or friendliness <a cool impersonal manner> c of jazz :  marked by restrained emotion and the frequent use of counterpoint d :  free from tensions or violence <we used to fight, but we're cool now>

  3. 3 —used as an intensive <a cool million dollars>

  4. 4 :  marked by deliberate effrontery or lack of due respect or discretion <a cool reply>

  5. 5 :  facilitating or suggesting relief from heat <a cool dress>

  6. 6 a of a color :  producing an impression of being cool; specifically :  of a hue in the range violet through blue to green b of a musical tone :  relatively lacking in timbre or resonance

  7. 7 slang a :  very good :  excellent; also :  all right b :  fashionable, hip <not happy with the new shoes … because they were not cool — Celestine Sibley>

coolish

play \ˈkü-lish\ adjective

coolly

also

cooly

play \ˈkü(l)-lē\ adverb

coolness

play \ˈkül-nəs\ noun

Examples of cool in a sentence

  1. The weather is cool today.

  2. The surface is cool to the touch.

  3. The plant grows best in cool climates.

  4. I'm feeling a little cool.

  5. We changed into some cooler clothes.

  6. She remained calm, cool, and collected.



Origin and Etymology of cool

Middle English col, from Old English cōl; akin to Old High German kuoli cool, Old English ceald cold — more at cold


First Known Use: before 12th century

Synonym Discussion of cool

cool, composed, collected, unruffled, imperturbable, nonchalant mean free from agitation or excitement. cool may imply calmness, deliberateness, or dispassionateness <kept a cool head>. composed implies freedom from agitation as a result of self-discipline or a sedate disposition <the composed pianist gave a flawless concert>. collected implies a concentration of mind that eliminates distractions especially in moments of crisis <the nurse stayed calm and collected>. unruffled suggests apparent serenity and poise in the face of setbacks or in the midst of excitement <harried but unruffled>. imperturbable implies coolness or assurance even under severe provocation <the speaker remained imperturbable despite the heckling>. nonchalant stresses an easy coolness of manner or casualness that suggests indifference or unconcern <a nonchalant driver>.

2

cool

verb

Simple Definition of cool

  • : to make (someone or something) cool

  • : to become cool : to lose heat or warmth

  • : to become less strong or intense especially in emotion

Source: Merriam-Webster's Learner's Dictionary

Full Definition of cool

  1. intransitive verb
  2. 1 :  to become cool :  lose heat or warmth <placed the pie in the window to cool> —sometimes used with off or down

  3. 2 :  to lose ardor or passion <his anger cooled>

  4. transitive verb
  5. 1 :  to make cool :  impart a feeling of coolness to <cooled the room with a fan> —often used with off or down <a swim cooled us off a little>

  6. 2 a :  to moderate the heat, excitement, or force of :  calm <cooled her growing anger> b :  to slow or lessen the growth or activity of —usually used with off or down <wants to cool off the economy without freezing it — Newsweek>

cool it

  1. :  to calm down :  go easy <the word went out to the young to cool it — W. M. Young>

cool one's heels

  1. :  to wait or be kept waiting for a long time especially from or as if from disdain or discourtesy

Examples of cool in a sentence

  1. The fan cools the engine.

  2. the cooling effect of the breeze

  3. Allow the cake to cool before slicing.

  4. the cooling of the ocean waters

  5. I took a break from the discussion to allow my anger to cool.

  6. His interest in her has cooled somewhat.



Before 12th Century

First Known Use of cool

before 12th century


3

cool

noun

Definition of cool

  1. 1 :  a cool time, place, or situation <the cool of the evening>

  2. 2 a :  absence of excitement or emotional involvement :  detachment <must surrender his fine cool and enter the closed crazy world of suicide — Wilfrid Sheed> b :  poise, composure <press questions … seemed to rattle him and he lost his coolNew Republic>

  3. 3 :  hipness



Examples of cool in a sentence

  1. <the judge's customary cool stood him in good stead during the sensational trial>

  2. <I envy you your cool.>



15th Century

First Known Use of cool

15th century


4

cool

adverb

Simple Definition of cool

  • : in a calm manner : in a way that does not seem unusual or excited

Source: Merriam-Webster's Learner's Dictionary

Full Definition of cool

  1. :  in a casual and nonchalant manner <play it cool>

Examples of cool in a sentence

  1. Here comes Mom. Act cool and she won't suspect a thing.



1841

First Known Use of cool

1841



COOL Defined for Kids

1

cool

play
adjective \ˈkül\

Definition of cool for Students

cooler

coolest

  1. 1 :  somewhat cold :  not warm <a cool day> <a cool room>

  2. 2 :  not letting or keeping in heat <cool clothes>

  3. 3 :  3calm 2 <She is cool in a crisis.>

  4. 4 :  not interested or friendly:  <He was cool to my idea.>

  5. 5 :  fashionable, stylish, or attractive in a way that is widely approved of

  6. 6 :  very good excellent

coolly

adverb

coolness

noun



2

cool

play
verb

Definition of cool for Students

cooled

cooling

  1. :  to make or become less warm




3

cool

play
noun

Definition of cool for Students

  1. 1 :  a time or place that is not warm <the cool of the evening>

  2. 2 :  a calm state of mind <Keep your cool.>




Law Dictionary

cool

intransitive verb

Legal Definition of cool

  1. :  to lose passion :  become calm —sometimes used with off or down <the time elapsing…is such that a reasonable man thus provoked would have cooled — W. R. LaFave and A. W. Scott, Jr.>





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