Verbs

(v)mature, maturate, growdevelop and reach maturity; undergo maturation“He matured fast”, “The child grew fast”
(v)senesce, age, get on, mature, maturategrow old or older“She aged gracefully”, “we age every day — what a depressing thought!”, “Young men senesce”
(v)fester, maturate, suppurateripen and generate pus“her wounds are festering”