i Register
In some senses, behavior is marked as informal, US. Watch for register when choosing this word.
behavior
UK /bɪˈheɪ.vjə(ɹ)/ US /bɪˈheɪ.vjɚ/
noun 5
Definitions
noun
1
Human conduct relative to social norms.
Teachers will probably be on their best behaviour for your visit – but don't be upset if they don't even notice you; they've got enough going on.
2
The way or manner a living creature behaves or acts generally.
3
A state of probation about one's conduct.
He was on his best behavior when her family visited.
4
An observable response produced by an organism.
5
The way a device or system operates.
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