Oct. 20

 Synonyms of a unique word in the verse

anachronistic, ancient, antediluvian, antiquated, antique, archaic, bygone, dated, dead, dead and gone, dinosaur, discarded, disused, done for, dusty, extinct, fossil, gone, had it, has-been, horse and buggy, kaput, moldy, moth-eaten, old, old-fashioned, old-hat, old-school, out*, out-of-date, out-of-fashion, outmoded, outworn, passé, stale, superannuated, superseded, timeworn, unfashionable 

The fat lady has sung.