Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- v. To generate pus; suppurate.
- v. To form an ulcer.
- v. To undergo decay; rot.
- v. To be or become an increasing source of irritation or poisoning; rankle: bitterness that festered and grew.
- v. To be subject to or exist in a condition of decline: allowed the once beautiful park to fester.
- v. To infect, inflame, or corrupt.
- n. A small festering sore or ulcer; a pustule.
Century Dictionary and Cyclopedia
- n. An ulcer; a rankling sore; a small purulent tumor; more particularly, a superficial suppuration resulting from irritation of the skin, the pus being developed in vesicles of irregular figure and extent.
- n. The act of festering or rankling.
- To become a fester; generate purulent matter, as a wound; suppurate; ulcerate.
- To become corrupt; generate rottenness; rot.
- To become more and more virulent; rankle, as a feeling of resentment or hatred.
- To cause to fester: as, exposure festers a wound.
- To cause to rankle, as a feeling of resentment.
- n. Same as festue.
Wiktionary
GNU Webster's 1913
- v. To generate pus; to become imflamed and suppurate.
- v. To be inflamed; to grow virulent, or malignant; to grow in intensity; to rankle.
- v. To cause to fester or rankle.
- n. A small sore which becomes inflamed and discharges corrupt matter; a pustule.
- n. A festering or rankling.
WordNet 3.0
- n. a sore that has become inflamed and formed pus
- v. ripen and generate pus
Etymologies
- Middle English festren, from festre, fistula, from Old French, from Latin fistula.
Examples
“Killing everything or continuing to let this hesitancy fester is not going to get it done.”
“Jeff, fester is not blaiming the reporters for crying, if I understand him.”
“CNN into the source controversy using the word "fester”
Sound Politics: Case Study: Why Conservatives Distrust the MSM
“MARCIANO: So Ida going to hang around, kind of fester a little bit and bothers, right, almost for the weekend.”
“Give it a few more days to kind of fester, and the come out.”
“And apologies for the two comments, I had forgotten the word "fester”
“This one is just going to be -- just kind of fester and pester folks.”
“Designer labels fester in fiction despite the critics’ complaints”
Do We Need Awards for Brand-Name Blight in Fiction? « One-Minute Book Reviews
“Surin Pitsuwan, secretary-general of the Association of South East Asian Nations, said the situation was deteriorating and must not be left to "fester".”
“The Conservatives have promised greater powers to exclude pupils who otherwise "fester" in the mainstream, as well as better provision for those who are kicked out.”
Lists
These user-created lists contain the word ‘fester’.
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GRE Barrons Wordlist
A complete Barron's Wordlist for GRE preparation. Your online flashcard replacement.
abase, abash, abate, abbreviate, abdicate, aberrant, aberration, abet, abeyance, abhor, abject, abjure and 4084 more...
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just neat
insolent, redolent, clammy, chunder, berate, vainqueur, neotony, milquetoast, amphigory, semprini, twaddle, plethora and 28 more...
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Ugliest Sounding Words
List words that sound ugly, regardless of meaning
kumquat, milk, meal, jizz, bubonic, fester, goulash, sasquatch, carbuncle, sieve, onomatopoeia, burlesque and 29 more...
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desirAe's list
flustered, tryst, wretched, limmerance, subjective, ferment, fester, fleeting, synergy

hernesheir Just be thankful that Bob's your uncle. Sep 27, 2011
samoritan Fester Bestertester! I remember him! (said Uncle Fester) Dec 14, 2007
chained_bear So did I. Nov 2, 2007
reesetee Oh, I meant only the POS tagging option, chained_bear. :-) Nov 2, 2007
chained_bear I'll post this somewhere else too, but John: I hope you DO keep the tagging option whether you keep the WordNet stuff or not. Nov 2, 2007
picklechipsluva5 This word, though somewhat grotesque is one of my all time favorites. Festering wound. Gives me chills. Nov 2, 2007
reesetee I like it! Although I guess we're bound to see this kind of thing happen now and then.
John, are you still planning on keeping the taggable parts of speech option now that you've set this up? Nov 1, 2007
john It can be both, according to WordNet (WordNet: sounds kind of Orwellian, no?).
For a given word WordNet will tell you what part of speech is most common (its "polysemy count"), and it's usually spot on. I have the Word pages set up to figure out which part of speech is most common, and display that definition. This usually works, but for some reason it's claiming that the noun and verb forms of 'fester' have an equal polysemy count. Which strikes me as wrong: I agree with you, it's much more common as a verb.
So, I guess WordNet ain't perfect. Better than nothing, though, I think. What do you think? Nov 1, 2007
chained_bear Wait--the definition of fester is a noun? I never heard that. I thought it was a verb, meaning to become inflamed/infected. Is it a noun as well? Nov 1, 2007
chained_bear I had a small pet rodent named Fester. She was very lovely and tame. Nov 1, 2007
oroboros Fester Bestertester, MAD magazine character. Nov 1, 2007
sonofgroucho :-) Nov 1, 2007
maire gunther's rage on the line at the BMW factory was mounting because the boss kept after him to work fester and fester. Nov 1, 2007