senectitude en · NOUN
Etymology
From Latin senectus (“aged, old age”), senex (“old”). Compare senescent.
Meanings
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(uncountable) old age
Three-and-twenty years form a large portion of the short life of man,—one-third as nearly as can be expressed in unbroken numbers, of the entire term fixed by the psalmist, and full one-half, if we strike off the twilight of childhood and immature youth, and of senectitude weary of its toils.
1857, Hugh Miller, The Cruise of the Betsey, Or, a Summer Ramble Among the Fossiliferous Deposits of the Hebrides:
Synonyms
chair days · oldhood · senectitude · old age · eld · golden years · geezerdom · twilight years · superannuation · fogeydom · sunset years · age · codgerhood · vetustity · oldness · senescence · agedness · elderliness · elderliness