Word Study
bygone
CIDE DICTIONARY
bygone, a.
Past; gone by. Shak. [1913 Webster]
bygone, n.
Something gone by or past; a past event. Tennyson. [1913 Webster]
OXFORD DICTIONARY
bygone, adj. & n.
--adj. past, antiquated (bygone years).
--n. (in pl.) past offences (let bygones be bygones).
--adj. past, antiquated (bygone years).
--n. (in pl.) past offences (let bygones be bygones).
THESAURUS
bygone
ago, antiquated, antique, archaic, belated, blown over, by, bypast, dated, dead, dead and buried, deceased, defunct, departed, elapsed, erstwhile, expired, extinct, finished, forgotten, former, gone, gone glimmering, gone-by, has-been, irrecoverable, lapsed, late, lost, no more, obsolete, of old, of yore, old, old-time, old-timey, olden, oldfangled, once, onetime, out-of-date, over, passe, passed, passed away, past, quondam, run out, sometime, vanished, whilom, wound upROGET THESAURUS
bygone
The Past
N the past, past time, days of yore, times of yore, days of old, times of old, days past, times past, days gone by, times gone by, bygone days, old times, ancient times, former times, fore time, the good old days, the olden time, good old time, auld lang syne, eld, antiquity, antiqueness, status quo, time immemorial, distance of time, remote age, remote time, remote past, rust of antiquity, paleontology, paleography, paleology, paleozoology, palaetiology, archaeology, paleogeography, paleoecology, paleobotany, paleoclimatoogy, archaism, antiquarianism, medievalism, Pre-Raphaelitism, paleography, retrospect, retrospection, looking back, memory, laudator temporis acti, medievalist, Pre-Raphaelite, antiquary, antiquarian, archmologist, Oldbuck, Dryasdust, ancestry, past, gone, gone by, over, passed away, bygone, foregone, elapsed, lapsed, preterlapsed, expired, no more, run out, blown over, has-been, that has been, extinct, antediluvian, antebellum, never to return, gone with the wind, exploded, forgotten, irrecoverable, obsolete, former, pristine, quondam, ci-devant, late, ancestral, foregoing, last, latter, recent, over night, preterperfect, preterpluperfect, looking back, retrospective, retroactive, archaeological, paleo-, archaeo-, formerly, of old, of yore, erst, whilom, erewhile, time was, ago, over, in the olden time, anciently, long ago, long since, a long while, a long time ago, years ago, yesteryear, ages ago, some time ago, some time since, some time back, yesterday, the day before yesterday, last year, ultimo, lately, retrospectively, ere now, before now, till now, hitherto, heretofore, no longer, once, once upon a time, from time immemorial, from prehistoric times, in the memory of man, time out of mind, already, yet, up to this time, ex post facto, time was, the time has been, the time hath been, you can't go home again, fuimus Troes, fruit Ilium, hoc erat in more majorum, O call back yesterday, bid time return, tempi passati, the eternal landscape of the past, ultimus Romanorum, what's past is prologue, whose yesterdays look backward with a smile, Time with reference to a particular period.Oblivion
N oblivion, obliviousness, lethe, forgetfulness, amnesia, obliteration of &c, insensibility to the past, short memory, treacherous memory, poor memory, loose memory, slippery memory, failing memory, decay of memory, failure of memory, lapse of memory, waters of Lethe, waters of oblivion, amnesty, general pardon, repressed memory, forgotten, unremembered, past recollection, bygone, out of mind, buried in oblivion, sunk in oblivion, clean forgotten, gone out of one's head, gone out of one's recollection, forgetful, oblivious, mindless, Lethean, insensible to the past, heedless, non mi ricordo, the memory failing, the memory deserting one, being at fault, being in fault, To the Future.For further exploring for "bygone" in Webster Dictionary Online