- 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[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. Word Origin late Middle English: from the rare word fester ‘fistula’, later ‘festering sore’, or Old French festrir (verb), both from Old French festre (noun), from Latin fistula
BrE BrE//ˈfestə(r)//; NAmE NAmE//ˈfestər//Verb Forms present simple I / you / we / they fester
BrE BrE//ˈfestə(r)//; NAmE NAmE//ˈfestər//he / she / it festers
BrE BrE//ˈfestəz//; NAmE NAmE//ˈfestərz//past simple festered
BrE BrE//ˈfestəd//; NAmE NAmE//ˈfestərd//past participle festered
BrE BrE//ˈfestəd//; NAmE NAmE//ˈfestərd//-ing form festering
BrE BrE//ˈfestərɪŋ//; NAmE NAmE//ˈfestərɪŋ//