Lenient : (of a punishment or person in authority) more merciful or tolerant than expected.Obstinate : stubbornly refusing to change one's opinion or chosen course of action, despite attempts to persuade one to do so.Annoyed : slightly angry; irritated.Rude : offensively impolite or bad-mannered.Harsh : unpleasantly rough or jarring to the senses.Antonym of Lenient is Harsh