5
expired
5
ignored(verb, neglected)
5
lapsed(adjective, out, the past)
5
obsolete
4
unremembered(adjective, out, oblivion)
4
archaic(adjective, dead, past, lost, previous)
4
unrequited
4
vanished(adjective, dead, past, lost, previous)
3
absolved(verb, forgave)
3
acquitted(verb, forgave)
3
ancient(adjective, dead, past, lost, previous)
3
antediluvian(adjective, the past)
3
condoned(verb, forgave)
3
dated(adjective, dead, past, lost, previous)
3
erstwhile(adjective, dead, past, lost, previous)
3
excused(verb, forgave)
3
exonerated(verb, forgave)
3
exploded
3
forget
3
forgiven(verb, forgave)
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APASmart Define. (2015). forgotten thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/forgotten/thesaurus/synonyms
ChicagoSmart Define. 2015. "forgotten thesaurus" https://smartdefine.org/forgotten/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, forgotten thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/forgotten/thesaurus/synonyms>.
MLASmart Define. "forgotten thesaurus" 30 October 2015. Web. 22 September 2026. <https://smartdefine.org/forgotten/thesaurus/synonyms>