Auxiliary : providing supplementary or additional help and support.Responsible : having an obligation to do something, or having control over or care for someone, as part of one's job or role.Salvageable : rescue (a wrecked or disabled ship or its cargo) from loss at sea.Clear : easy to perceive, understand, or interpret.Ambiguous : not easy to perceive, understand, or interpret.Antonyms of Ambiguous is Clear.