What is another word for "dotard"?

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