Meaning of the word "lose one's temper" in English

What does "lose one's temper" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

lose one's temper

US /luːz wʌnz ˈtem.pɚ/
UK /luːz wʌnz ˈtem.pər/
"lose one's temper" picture

Idiom

to suddenly become very angry

Example:
I'm sorry I lost my temper with you yesterday.
He rarely loses his temper, even under pressure.