Synonyms|373Antonyms|99|Broader|11Narrower|2Related|693
3
primordial(adjective, original, old, past, venerable)
3
water under the bridge(noun, adjective, past)
3
whilom
3
yesteryear(noun, old, past, foretime)
3
yore(noun, adjective, past)
2
antebellum
2
back when(expression, adverb, late, old, past)
2
background(noun, old, past, foretime)
2
blown over(verb, phrasal verb, the past)
2
curio(noun, antique, freak, trinket, oddity)
2
expired
2
finished
2
foregoing(adjective, late, old, past, previous)
2
future
2
gone-by(adjective, late, old, past, previous)
2
heretofore(noun, adverb, old, past, foretime)
2
historic
2
history(noun, old, past, foretime)
2
irrecoverable
2
lapsed
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APASmart Define. (2015). bygone thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/bygone/thesaurus/synonyms
ChicagoSmart Define. 2015. "bygone thesaurus" https://smartdefine.org/bygone/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, bygone thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/bygone/thesaurus/synonyms>.
MLASmart Define. "bygone thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/bygone/thesaurus/synonyms>