What is another word for "graybeard"?

Roget's Thesaurus (1911) lists these synonyms for "graybeard": centenarian, crone, dotard, gaffer, gammer, grandam, grandfather, grandsire, man, nonagenarian, octogenarian, old, pantaloon, paternity, patriarch, preadamite, seer, sexagenarian, stage, stager, superfluous, the, veteran.