act behave in a certain manner; show a certain behavior; conduct or comport oneself; "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"
criticize -
find fault with; express criticism of; point out real or perceived flaws; "The paper criticized the new movie"; "Don't knock the food--it's free"
savage,
pillory,
crucify,
blast criticize harshly or violently; "The press savaged the new President"; "The critics crucified the author for plagiarizing a famous passage"
reprove,
admonish take to task; "He admonished the child for his bad behavior"