›[C]informaldisapprovinga person who believes everything they are told and is thereforeeasy to deceive: You didn't actuallybelieve him when he said he had a yacht, did you? Oh, Annie, you sucker!Naive and trustingInexperienced (of people)be a sucker for sthinformal›to like something so much that you cannot refuse it or judgeitsrealvalue: I have to confess I'm a bit of a sucker formusicals.EnthusiastsAdmirers