Persuasive : good at persuading someone to do or believe something through reasoning or the use of temptation.Demoralizing : causing someone to lose confidence or hope; disheartening.False : not according with truth or fact; incorrect.Discouraging : causing someone to lose confidence or enthusiasm; depressing.Unconvincing : failing to make someone believe that something is true or valid.Antonym of Persuasive is Unconvincing