Lose (one's) cool verb phrase
Not to keep one's temper
His mother lost her cool and yelled at him.
His teacher lost his cool when seeing Peter cheating on the test.
He lost his cool when the waiter spilled wine on his shirt.
To begin losing your temper and act with hostility and insist on who to beat by all means.
Used to describe someone who tends to become angry or upset very quickly or easily
Have an outburst of an emotion, especially anger
To use something to harden a material.
The verb "lose" should be conjugated according to its tense.
This phrase is used to describe something very modern or updated or something that no longer looks like what it's used to.
It has been a long time since I left my high school, and now I have to admit that it's certainly not your father's high school anymore.