festering

fes·ter  (fstr)

v. fes·tered, fes·ter·ing, fes·ters

v.intr.

1. To generate pus; suppurate.

2. To form an ulcer.

3. To undergo decay; rot.

4.

a. To be or become an increasing source of irritation or poisoning; rankle: bitterness that festered and grew.

b. To be subject to or exist in a condition of decline: allowed the once beautiful park to fester.

v.tr.

To infect, inflame, or corrupt.

n.

A small festering sore or ulcer; a pustule.

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[Middle English festren, from festre, fistula, from Old French, from Latin fistula.]

Thesaurus

Noun	1.	festering - (medicine) the formation of morbific matter in an abscess or a vesicle and the discharge of pus suppuration, maturation medical specialty, medicine - the branches of medical science that deal with nonsurgical techniques bodily function, bodily process, body process, activity - an organic process that takes place in the body; "respiratory activity"
	2.	festering - a fluid product of inflammation sanies, suppuration, ichor, purulence, pus bodily fluid, body fluid, liquid body substance, humour, humor - the liquid parts of the body gleet - a thin morbid discharge as from a wound or especially chronic gonorrhea

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festering

adjective

1. venomous, vicious, smouldering, virulent, black-hearted recrimination and festering resentment

2. septic, infected, poisonous, inflamed, pussy, suppurating, ulcerated, purulent, maturating, gathering afflicted by festering sores

3. rotting, decaying, decomposing, putrefying The cobbles were littered with festering garbage