keep one's temper

: to retain in one's possession or power

: to refrain from granting, giving, or allowing

: to have in control

: the means or provisions by which one is kept

: one that keeps or protects: such as

: fortress, castle

: heat of mind or emotion : proneness to anger : passion

: calmness of mind : composure

: state of feeling or frame of mind at a particular time usually dominated by a single strong emotion

: to dilute, qualify, or soften by the addition or influence of something else : moderate

: to anneal or toughen (glass) by a process of gradually heating and cooling

: to harden (a material, such as steel) by reheating and cooling in oil