Methuselah :  (noun)
1: (Old Testament) a patriarch (grandfather of Noah) who is said to have lived 969 years [syn: Methuselah]
2: a man who is very old [syn: old man, greybeard, graybeard, Methuselah]

Father Time, Nestor, Old Paar, antediluvian, antique, back number, centenarian, conservative, dad, dodo, dotard, elder, fogy, fossil, fud, fuddy-duddy, gaffer, geezer, golden-ager, gramps, grandfather, grandsire, granny, graybeard, has-been, longhair, matriarch, mid-Victorian, mossback, nonagenarian, octogenarian, old believer, old chap, old codger, old crock, old dodo, old dog, old duffer, old fogy, old geezer, old gent, old gentleman, old liner, old man, old party, old poop, old woman, old-timer, older, oldster, pantaloon, patriarch, pop, pops, presbyter, reactionary, regular old fogy, relic, senior citizen, septuagenarian, sexagenarian, square, starets, the quiet-voiced elders, traditionalist, venerable sir, veteran,