Grammar fix
keep your cool
not lose your temper
To stay calm and avoid becoming angry or panicked in a difficult situation.
How oftenCommon
LevelB2
Used inMostly spoken
Hear it in context
Notice where the phrase sounds natural.
She kept her cool even when the customer started shouting.
I find it easier to keep my cool now because I have learned not to react immediately when someone criticises me.
Fix the pattern
One small grammar move makes it sound right.
Not: I tried to keep the cool during the argument.
Say: I tried to keep my cool during the argument.
The expression needs a possessive adjective: 'keep my/your/his cool'.
Don't confuse it
Other ways to say it
Don't panic when things get stressful
What stays steadyFeelingsThinking
keep calmRemaining calm during a stressful or worrying situation.
keep your coolYou're here · Not losing your temper or panicking when provoked.
keep your headThinking clearly in a crisis or emergency.