fester
/ˈfestə(r)/verb
no obj.［often as adj. festering］
1- (of a wound or sore) become septic; suppurate（伤口, 疮）溃烂, 化脓：
a festering abscess.
正在溃烂化脓的脓肿。
1.1
- (of food or rubbish) become rotten and offensive to the senses（食物, 垃圾）腐烂：
sandwiches curled open to show festering meats.
三明治卷起来了, 开口处露出了腐烂的肉。
1.2
- (of a negative feeling or a problem) become worse or more intense, especially through long-term neglect or indifference（负面情绪, 问题）（尤指因长期疏忽或冷漠而）恶化; 激化：
a festering controversy.
不断激化的争议。
1.3
- (of a person) undergo physical and mental deterioration in isolated inactivity（人因孤独和缺少活动而）遭受身心创伤：
I might be festering in jail now.
我因为狱中待着不动可能正在遭受着身心的创伤。
词源
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 'pipe, reed, fistula'.