vindicate clear of accusation, blame, suspicion, or doubt with supporting proof; "You must vindicate yourself and fight this libel"
whitewash exonerate by means of a perfunctory investigation or through biased presentation of data
purge excrete or evacuate (someone's bowels or body); "The doctor decided that the patient must be purged"
acquit -
behave in a certain manner; "She carried herself well"; "he bore himself with dignity"; "They conducted themselves well during these difficult times"
bear,
hold,
carry move while holding up or supporting; "Bear gifts"; "bear a heavy load"; "bear news"; "bearing orders"
act,
move 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"