Dictionary

1cool

adjective \ˈkül\

: 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

Full Definition of COOL

1
:  moderately cold :  lacking in warmth
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
—used as an intensive <a cool million dollars>
4
:  marked by deliberate effrontery or lack of due respect or discretion <a cool reply>
5
:  facilitating or suggesting relief from heat <a cool dress>
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
slang
a :  very good :  excellent; also :  all right
b :  fashionable, hip <not happy with the new shoes … because they were not cool — Celestine Sibley>
cool·ish \ˈkü-lish\ adjective
cool·ly also cooly \ˈkü(l)-lē\ adverb
cool·ness \ˈkül-nəs\ noun
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Origin 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>.

2cool

verb

: to make (someone or something) cool

: to become cool : to lose heat or warmth

: to become less strong or intense especially in emotion

Full Definition of COOL

intransitive verb
1
:  to become cool :  lose heat or warmth <placed the pie in the window to cool> —sometimes used with off or down
2
:  to lose ardor or passion <his anger cooled>
transitive verb
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>
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
:  to calm down :  go easy <the word went out to the young to cool it — W. M. Young>
cool one's heels
:  to wait or be kept waiting for a long time especially from or as if from disdain or discourtesy

First Known Use of COOL

before 12th century

3cool

noun

Definition of COOL

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

First Known Use of COOL

15th century

4cool

adverb

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

Full Definition of COOL

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

First Known Use of COOL

1841
COOLLY Defined for Kids

1cool

adjective \ˈkül\
cool·ercool·est

Definition of COOL for Kids

1
:  somewhat cold :  not warm <a cool day> <a cool room>
2
:  not letting or keeping in heat <cool clothes>
3
:  3calm 2 <She is cool in a crisis.>
4
:  not interested or friendly:  <He was cool to my idea.>
5
:  fashionable, stylish, or attractive in a way that is widely approved of
6
:  very good excellent
cool·ly adverb
cool·ness noun

2cool

verb
cooledcool·ing

Definition of COOL for Kids

:  to make or become less warm

3cool

noun

Definition of COOL for Kids

1
:  a time or place that is not warm <the cool of the evening>
2
:  a calm state of mind <Keep your cool.>

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