110 entries under adjective topic. ×

1
in oblivion(expression, dead, past, lost)
1
incomplete
1
inhospitable
1
irremediable
1
irreparable
1
irretrievable
1
late(dead, past, lost, previous)
1
left behind
1
left out
1
of old(expression, dead, past, lost)
1
of yore(expression, dead, past, lost)
1
old-fashioned(dead, past, lost, previous)
1
old-time(dead, past, lost, previous)
1
olden(dead, past, lost, previous)
1
oldfangled(dead, past, lost, previous)
1
one-time(dead, past, lost, previous)
1
out-of-date(dead, past, lost, previous)
1
previous(dead, past, lost, former)
1
repressed
1
slipped one's mind
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APASmart Define. (2015). forgotten thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/forgotten/thesaurus/synonyms
ChicagoSmart Define. 2015. "forgotten thesaurus" https://smartdefine.org/forgotten/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, forgotten thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/forgotten/thesaurus/synonyms>.
MLASmart Define. "forgotten thesaurus" 30 October 2015. Web. 25 September 2026. <https://smartdefine.org/forgotten/thesaurus/synonyms>