blow (one's) cool

blow (one's) cool

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

See also: blow, cool

blow one's cool

see under keep one's cool.

See also: blow, cool

blow your cool

lose your composure; become angry or agitated. informal

See also: blow, cool

blow (one's) cool

Slang

To lose one's composure.

See also: blow, cool