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.
To talk the main part at once, or avoid talking about what is not important
You should get straight to the point.