adj. 1 old, past middle age, oldish, advanced in years, of advanced age, along in years, grey, ageing, aged, venerable; hoary, ancient, senescent, decrepit, superannuated; senile, anile; Colloq over the hill, past it, long in the tooth, having one foot in the grave, old-fogyish or old-fogeyish Today, a person isn't considered elderly till he's past 65
n. 2 the elderly. the retired, the old, senior citizens, pensioners, O.A.P.'s, old-age pensioners, golden-agers, Colloq old-timers, (old) geezers, (old) fogies or fogeys, Brit wrinklies The elderly constitute an increasingly large body of voters