Word: fester
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A fistula.
A sore or an ulcer of the skin.
The condition of something that festers; a festering; a festerment.
To become septic; to become rotten.
To worsen, especially due to lack of attention. Example: Deal with the problem immediately; do not let it fester.
To cause to fester or rankle.
You can find a list of possible crossword clues for FESTER below.