suppurate

To suppurate is to get infected and form pus. If that scrape on your knee starts to suppurate, you might want to go to the doctor.

In medicine, suppurate is the official term for what you might think of as "become gross and full of pus." Pimples sometimes become swollen and painful before they suppurate, and cuts and scrapes that get infected can also suppurate, oozing a thick, white substance. We can trace this word back to a root that means both "matter from a sore" and "bitterness or malice."

Definitions of suppurate
  1. verb
    cause to ripen and discharge pus
    “The oil suppurates the pustules”
    synonyms: mature
    fester, maturate
    ripen and generate pus
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    type of:
    draw
    cause to localize at one point
  2. verb
    ripen and generate pus
    synonyms: fester, maturate
    mature
    cause to ripen and discharge pus
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    type of:
    discharge, eject, exhaust, expel, release
    eliminate (a substance)
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