THESAURUS
graybeard
Father Time, Methuselah, Nestor, Old Paar, centenarian, dotard, elder, gaffer, geezer, golden-ager, gramps, grandfather, grandsire, gray-headed person, grayhair, grisard, nonagenarian, octogenarian, old chap, old codger, old dog, old duffer, old geezer, old gent, old gentleman, old man, old party, old-timer, older, oldster, pantaloon, patriarch, presbyter, senior citizen, septuagenarian, sexagenarian, the quiet-voiced elders, venerable sir, veteran
ROGET THESAURUS
graybeard
Veteran
N
veteran, old man, seer, patriarch,
graybeard, grandfather, grandsire, grandam, gaffer, gammer, crone, pantaloon, sexagenarian, octogenarian, nonagenarian, centenarian, old stager, dotard, preadamite, Methuselah, Nestor, old Parr, elders, forefathers, superfluous lags the veteran on the stage.