adjective

(of a person) old or ageing.

an elderly relative

aged,old,mature,older,senior,ancient,venerable,advanced in years,getting on,ageing,in one’s dotage,long in the tooth,as old as the hills,grey,grey-haired,grey-bearded,grizzled,hoary,past one’s prime,not as young as one was,not as young as one used to be,decrepit,doddering,doddery,not long for this world,senile,superannuated,septuagenarian,octogenarian,nonagenarian,centenarian,past it,over the hill,no spring chicken,senescent,longevous,old people,older people,elderly people,elders,geriatrics,senior citizens,(old-age) pensioners,OAPs,retired people,seniors,retirees,golden agers,(golden) oldies,wrinklies,oldsters,woopies