lose one's temper

Idioms  

1. Also, lose it. Give way to violent anger, lose self-control. For example, When she found out what Ann had done, she lost her temper, or He arrived without that important check, and then I just lost it completely. The first term dates from the early 1800s; the second slangy locution dates from the mid-1900s.

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Example Sentences

It’s easy to lose one’s temper in this situation, so the counsellor has instructed the friends and family members to organize their thoughts on paper.

From The New Yorker • Jun. 12, 2017

A few minutes later, Stafford addressed the court, again thanking Eulian for his apology and saying she knows what it feels like to lose one's temper.

From Los Angeles Times • Jun. 30, 2015

Till then it is idle to wrangle, and to lose one's temper.

From Blackwood's Edinburgh Magazine — Volume 55, No. 339, January, 1844 by Various

But I think it's a pity ever to lose one's temper.

From The Bars of Iron by Dell, Ethel M. (Ethel May)

To be high strung and quick to lose one's temper may sound fine in romantic rubbish, but in real life it is folly, for much more can be accomplished by being calm.

From Maintaining Health Formerly Health and Efficiency by Alsaker, R. L.