The noun temper is a person’s state of mind in terms of strong emotion, with regards to being angry or calm. It can also be a verb, which means to soften, tone down or make something less extreme.
Synonyms are mood, ambiance, tantrum, or attitude.
The word origins from Old English temprian meaning “bring something into the required condition by mixing it with something else” and Anglo-French temprer, as well as from Latin temperare which means to “moderate, mix or temper”.
Oh boy, that woman has quite a temper.
You have to learn how to control your temper or else you’ll end up losing all your friends.
He walked out with a bad temper and snorted to everyone on his way.