List of has been synonyms and has been related words.
Methuselah, ago, antediluvian, antiquated, antique, back number, back-number, behind the times, blown over, by, bygone, bypast, conservative, dad, dated, dead, dead and buried, deceased, defunct, departed, dodo, elapsed, elder, expired, extinct, finished, fogy, forgotten, fossil, fud, fuddy-duddy, gone, gone glimmering, gone-by, granny, irrecoverable, lapsed, longhair, matriarch, mid-Victorian, mossback, no more, obsolete, old believer, old crock, old dodo, old fogy, old hat, old liner, old man, old poop, old woman, old-fashioned, old-timer, old-timey, oldfangled, out of fashion, out of season, out-of-date, outdated, outmoded, over, passe, passed, passed away, past, patriarch, pop, pops, reactionary, regular old fogy, relic, run out, square, starets, styleless, traditionalist, unfashionable, vanished, wound up