What is another word for "octogenarian"?

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