When someone is behaving in a certain way, they are acting in a way that is typically considered polite and acceptable. This might include things like following the rules, being polite, and not making too much noise.
He was behaving very rudely by talking on his cell phone in the library.
She was behaving very nicely by waiting until everyone was done before she started her own conversation.
verb
To conduct (oneself) well, or in a given way.
verb
To act, conduct oneself in a specific manner; used with an adverbial of manner.
verb
To conduct, manage, regulate (something).
verb
To act in a polite or proper way.
noun
Behaviour
1
It behaves as a fast acting neurotoxin in insects.
2
The electrons are unbound and behave like the conduction electrons in a metal.
3
How the Grammar brats behave on the tram has nothing to do with it.
4
The boy was required to behave with courtesy.
5
The clone behaves like the Superman.
6
Kurt behaved insolently toward adults.
7
She behaves disobediently in the school and the dormitory.
8
Everyone will behave courteously and in good faith.
9
He behaved insolently toward adults.
10
He conscientiously behaves servile and devote.