Definition of sully verb from the Oxford Advanced American Dictionary

     

    sully

     verb
    verb
    NAmE//ˈsʌli//
     
    (formal or )Verb Forms present simple I / you / we / they sully
     
    he / she / it sullies
     
    past simple sullied
     
    -ing form sullying
     
     
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  1. 1(literary) sully something to spoil or reduce the value of something By cheating they have sullied the good name of their country.
  2. 2sully something to make something dirty She wondered if she dared risk sullying the gleaming sink.
See the Oxford Advanced Learner's Dictionary entry: sully