128 entries under adjective topic. ×

1
inorganic(lifeless, organic, nonliving)
1
motionless(dull, cold, lifeless, nonliving)
1
musty(odd, old, primitive, unfashionable)
1
neglected(odd, old, primitive, unfashionable)
1
obliterated
1
obsolescent(odd, old, primitive, unfashionable)
1
odd(old, primitive, unfashionable, outdated)
1
of yore(expression, dead, past, lost)
1
old-fangled(odd, old, primitive, unfashionable)
1
one-time(dead, past, lost, previous)
1
out-of-style(odd, old, primitive, unfashionable)
1
passive
1
previous(dead, past, lost, former)
1
quondam(dead, past, lost, previous)
1
rococo(odd, old, primitive, unfashionable)
1
snuffed out(dead, obsolete)
1
sometime(dead, past, lost, previous)
1
unknown(dead, obsolete)
1
unremembered
1
unstylish(odd, old, primitive, unfashionable)
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APASmart Define. (2016). extinct thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/extinct/thesaurus/synonyms
ChicagoSmart Define. 2016. "extinct thesaurus" https://smartdefine.org/extinct/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, extinct thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/extinct/thesaurus/synonyms>.
MLASmart Define. "extinct thesaurus" 10 February 2016. Web. 22 September 2026. <https://smartdefine.org/extinct/thesaurus/synonyms>