American English

Definition of fester verb from the Oxford Advanced American Dictionary

     

    fester

     verb
    verb
    NAmE//ˈfɛstər//
     
    Verb Forms present simple I / you / we / they fester
     
    he / she / it festers
     
    past simple festered
     
    -ing form festering
     
     
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  1. 1[intransitive] (of a wound or cut) to become badly infected festering sores/wounds If you don't take the splinter out, it will fester.
  2. 2[intransitive] (of bad feelings or thoughts) to become much worse because you do not deal with them successfully Instead of talking the matter over with him, she allowed her resentment to fester in her mind.
See the Oxford Advanced Learner's Dictionary entry: fester