/ Dictionary / Index Y yucky: Meaning and Definition of Find definitions for: yuck•y Pronunciation: (yuk'ē), [key] — yuck•i•er, yuck•i•est. thoroughly unappetizing, disgusting, or repugnant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: yucky (Thesaurus) yuck Yüen Related Content Daily Word Quiz: hinder Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language