Synonyms of 'suppurate'
If something is discharged from inside a place, it comes out.
The resulting salty water will be discharged at sea.
If a wound festers, it becomes infected, making it worse.
The wound is festering and gangrene has set in.
Thesaurus for suppurate from the Collins English Thesaurus
(of a wound , sore , etc) to discharge pus ; fester