Platitude/ˈplætɪtuːd/ Definition 1 of 2Pro Tip 1/3Overused Expressions Platitudes often sound meaningful but are so overused they've lost impact. Saying 'time heals all wounds' is just a platitude. Pro Tip 2/3Avoid in Writing Using platitudes can make writing seem lazy or uninspired. Her essay was marked down for its use of platitudes. Pro Tip 3/3Not Persuasive A platitude won't usually persuade someone, as it lacks depth and originality. His argument was weak, relying on platitudes instead of facts.