cool

Meanings

Adjective

• Having a slightly low temperature; mildly or pleasantly cold.
• Allowing or suggesting heat relief.
• Of a color, in the range of violet to green.
• Of a person, not showing emotion; calm and in control of oneself.
• Unenthusiastic, lukewarm, skeptical.
• Calmly audacious.
• Of a person, knowing what to do and how to behave; considered popular by others.
• In fashion, part of or fitting the in crowd; originally hipster slang.
• Of an action, all right; acceptable; that does not present a problem.
• Of a person, not upset by circumstances that might ordinarily be upsetting.
• Quietly impudent, defiant, or selfish; deliberately presuming: said of persons and acts.

Noun

• A moderate or refreshing state of cold; moderate temperature of the air between hot and cold; coolness.
• A calm temperament.
• The property of being cool, popular or in fashion.

Verb

• To lose heat, to get colder.
• To make cooler, less warm.
• To become less intense, e.g. less amicable or passionate.
• To make less intense, e.g. less amicable or passionate.
• To kill.

Origin

• From Middle English cool, from Old English cōl, from Proto-West Germanic *kōl(ī), from Proto-Germanic *kōlaz, *kōluz, from Proto-Indo-European *gel-. Cognate with Saterland Frisian köil, West Frisian koel, Dutch koel, Limburgish kool, German Low German köhl, German kühl. Related to cold.
• From Middle English colen, from Old English cōlian ("to cool, grow cold, be cold"), from Proto-West Germanic *kōlēn ("to become cold"), from Proto-Indo-European *gel- ("to freeze"). Cognate with Dutch koelen ("to cool"), German kühlen ("to cool"), Swedish kyla ("to cool, refrigerate"). Also partially from Middle English kelen, from Old English cēlan ("to cool, be cold, become cold"), from Proto-Germanic *kōlijaną ("to cool"), altered to resemble the adjective cool. See keel.