temper · noun /ˈtem.pər/Full view
temper
B2 C usually no plural when someone becomes angry very quickly
Dictionary examples:

She has a real temper.

He's got a really bad temper.

Learner example:

He was a very complicated character who had a bad temper and was easily angered. (First Certificate in English; B2; Portuguese)

lose your temper
B2 to suddenly become angry
Dictionary example:

The children behaved so badly that I lost my temper.

Learner example:

Yesterday, I must confess, I lost my temper with my son. (First Certificate in English; B2; Portuguese)

keep your temper
C2 to succeed in staying calm and not becoming angry
Dictionary example:

It was hard to keep my temper with so many things going wrong.

Learner example:

He never offends people and he keeps his temper even if someone insults him. (Certificate of Proficiency in English; C2; German)

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