From Longman Dictionary of Contemporary Englishmugginsmug‧gins /ˈmʌɡɪnz/ noun [uncountable] British English spoken informal STUPID/NOT INTELLIGENTused humorously to mean yourself, when you feel stupid because you have let other people treat you unfairly Everyone disappeared after supper, leaving muggins here to do the washing-up.Origin muggins (1800-1900) Probably from the name Muggins, linked with → MUG1 4
