Entry 1 sense Webster, 1913 yucky · yuck·y · IPA /ˈjʌki/ 01 a. Repugnant or distasteful. 1. Repugnant or distasteful.[slang] Syn. disgusting, disgustful, distasteful, loathly, loathsome, repellent, repellant, repugnant, revolting.