lose (one's) cool

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lose (one's) cool

To lose control of one's composure, temper, or nerve in a given situation. He really lost his cool when the waiter dropped his food. I really lost my cool during the interview.

See also: cool, lose

Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

lose one's cool

 and blow one's cool

to lose one's temper; to lose one's nerve. Wow, he really lost his cool! What a tantrum! Whatever you do, don't blow your cool.

See also: cool, lose

McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

lose one's cool

see under keep one's cool.

See also: cool, lose

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

lose your cool

COMMON If you lose your cool, you suddenly get angry and behave in a bad-tempered or uncontrolled way. At this point, I lost my cool and shouted `for goodness sake, stop!' `Why don't you sit down and have a drink?' — `I don't want a drink,' Anne replied, losing her cool.

See also: cool, lose

Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

lose your cool

lose control of your temper or emotions. informal

See also: cool, lose

Farlex Partner Idioms Dictionary © Farlex 2017

keep/lose your ˈcool

(informal) stay calm/get angry, excited, etc: He was very insulting. I really don’t know how I managed to keep my cool.

See also: cool, keep, lose

Farlex Partner Idioms Dictionary © Farlex 2017

lose one’s cool

tv. to lose control; to lose one’s temper. (Compare this with keep one’s cool.) Now, don’t lose your cool. Relax.

See also: cool, lose

McGraw-Hill's Dictionary of American Slang and Colloquial Expressions Copyright © 2006 by The McGraw-Hill Companies, Inc. All rights reserved.