maturate

(verb) develop and reach maturity; undergo maturation. Synonyms: mature, grow. Examples: "He matured fast." "The child grew fast."

(verb) grow old or older. Synonyms: senesce, age, get on, mature. Examples: "She aged gracefully." "We age every day--what a depressing thought!." "Young men senesce."

(verb) ripen and generate pus. Synonyms: fester, suppurate. Example: "Her wounds are festering."