lose one's cool

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. © 2024 Farlex, Inc, all rights reserved.

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 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.