tempertempertemperstemperedtemperingnoun1If you have a temper, you get angry very easily: She must learn to control her temper.2the way you are feeling at a certain timesame meaningmood: Why are you in a bad temper?in a temperangry: She's in a temper because she's tired.lose your temperto suddenly become angry: She lost her temper with a customer and shouted at him.