i think that my sister has behavior problems.
I disapprove of your behavior.
He would always rationalize his bad behavior.
Because of his behavior, he faced expulsion from school.
The dog's behavior was perfect.
You can use "behavior" in a sentence like this: "The teacher praised the student for demonstrating good behavior in class."
To be intemperate is to lack self control. An example sentence would be: His intemperate behavior was making everyone uncomfortable.
I am affronted by your behavior.
You could use the word aboniminable in a sentence like this: The boys' behavior was abominable on the school trip, and Alfred's behavior was abominable because he threw a chair at Hector. EDIT: The boys' behavior was abominable on the school field trip because Alfred threw a chair at Hector.
Example sentence - Her behavior was a commendable example for her peers.
Example sentence - We hoped she would get the harshest punishment for her rude behavior.
Her behavior was angelic in church.
John was appalled by Susie's behavior.