Example : You should act like an adult.
Don't behave like a fool.
What makes her do this way?.
The dog acts ferocious, but he is really afraid of people.

Synonyms : act, do

Example : She carried herself well.
He bore himself with dignity.
They conducted themselves well during these difficult times.

Synonyms : acquit, bear, carry, comport, conduct, deport

Example : The children must learn to behave.

Synonyms : comport