SUPPURATE

fester, maturate, suppurate

(verb) ripen and generate pus; “her wounds are festering”

suppurate, mature

(verb) cause to ripen and discharge pus; “The oil suppurates the pustules”

Source: WordNet® 3.1

Etymology

Verb

suppurate (third-person singular simple present suppurates, present participle suppurating, simple past and past participle suppurated)

(intransitive) To form or discharge pus.

(transitive) To cause to generate pus.

Source: Wiktionary

Sup"pu*rate, v. i. [imp. & p. p. Suppurated; p. pr. & vb. n. Suppurating.] Etym: [L. suppuratus, p.p. of suppurare to suppurate, cause to suppurate; sub under + pus, puris, matter. See Pus.]

Definition: To generate pus; as, a boil or abscess suppurates.

Sup"pu*rate, v. t.

Definition: To cause to generate pus; as, to suppurate a sore. Arbuthnot.

Source: Webster’s Unabridged Dictionary 1913 Edition