senesce

se·nesce  (s-ns)

intr.v. se·nesced, se·nesc·ing, se·nesc·es

To reach later maturity; grow old.

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[Back-formation from senescent.]

Thesaurus

Verb

1.

senesce - grow old or older; "She aged gracefully"; "we age every day--what a depressing thought!"; "Young men senesce" age, maturate, mature, get on turn - become officially one year older; "She is turning 50 this year" fossilise, fossilize - become mentally inflexible develop - grow, progress, unfold, or evolve through a process of evolution, natural growth, differentiation, or a conducive environment; "A flower developed on the branch"; "The country developed into a mighty superpower"; "The embryo develops into a fetus"; "This situation has developed over a long time" dote - be foolish or senile due to old age