THESAURUS
longhair
Methuselah, antediluvian, antique, back number, conservative, dad, dodo, elder, fogy, fossil, fud, fuddy-duddy, granny, has-been, matriarch, mid-Victorian, mossback, old believer, old crock, old dodo, old fogy, old liner, old man, old poop, old woman, old-timer, patriarch, pop, pops, reactionary, regular old fogy, relic, square, starets, traditionalist
ROGET THESAURUS
longhair
Sage
N
sage, wise man, genius, master mind, master spirit of the age, longhead, thinker, intellectual,
longhair, authority, oracle, luminary, shining light, esprit fort, magnus Apollo, Solon, Solomon, Nestor, Magi, second Daniel, man of learning, expert, wizard, wiseacre, bigwig, know-it-all, poor man's Einstein, venerable, reverenced, emeritus, barba tenus sapientes.