VERB
(局势、问题或情感)恶化，激化,加剧
If you say that a situation, problem, or feeling is festering, you disapprove of the fact that it is being allowed to grow more unpleasant or full of anger, because it is not being properly recognized or dealt with.
例句
Resentments are starting to fester.
仇恨开始日益加深。
...festering wounds of the legacy of British imperialism.
英帝国主义遗留的日益恶化的创伤