temper
US /ˈtem.pɚ/
UK /ˈtem.pɚ/

1.
a person's state of mind seen in terms of their being angry or calm
:
•
He has a very bad temper.
•
She lost her temper and shouted at him.
2.
a tendency to become angry easily
:
•
He has a short temper.
•
Beware of his quick temper.
1.
improve the hardness and elasticity of (steel or other metal) by reheating and then cooling it
:
•
The blacksmith will temper the steel to make it stronger.
•
The blades were carefully tempered for optimal performance.