lose one's temper

• IPA^(key): /luːz wʌnz tɛmpə(ɹ)/

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lose one's temper (third-person singular simple present loses one's temper, present participle losing one's temper, simple past and past participle lost one's temper)

1. (intransitive, idiomatic) To become angry or annoyed.

   When my dad found out I had failed the exams, he completely lost his temper.

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