Synonyms of festering

1 Syllable
gall, rot, irk
2 Syllables
gather, rotten, blister, chafe, decay, rankle, smolder, canker, fecal, ulcer
3 Syllables
bad-smelling, putrified, pustular, putrefy, purulent
4 Syllables
maturate, suppurate, overripe, aggravate, ulcerate