Definition of yuck exclamation from the Oxford Advanced American Dictionary

     

    yuck

     exclamation
    (also yuk)exclamation
    NAmE//yʌk//
     
    (informal)
     
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  1. 1used to show that you think something is disgusting or unpleasant synonym yech
  2. 2 It's filthy! Yuck!
See the Oxford Advanced Learner's Dictionary entry: yuck