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

“It is not worth while to lose one’s temper or one’s soul for the iniquities of Mr. Pocock Vancouver,” said John.

From An American Politician by Crawford, F. Marion (Francis Marion)

The impudence of you verdammt——No, it’s foolish to lose one’s temper.

From The Day of Wrath A Story of 1914 by Tracy, Louis

I believe they consider it to be degrading, either first, to lose one's temper, or secondly, to administer justice in such a fashion.

From Corea or Cho-sen The Land of the Morning Calm by Landor, Arnold Henry Savage