128 entries under adjective topic. ×

61
dead(feature, state, split, quit)
45
obsolete(feature, characteristic, trait, dead)
44
archaic(feature, characteristic, trait, dead)
41
defunct(feature, state, split, quit)
40
gone(feature, state, present, negative)
40
departed(feature, state, split, quit)
40
old-fashioned(feature, characteristic, trait, dead)
39
outmoded(feature, characteristic, trait, dead)
39
passé(feature, characteristic, trait, dead)
38
antiquated(feature, characteristic, trait, dead)
37
dated(feature, characteristic, trait, dead)
37
antique(feature, characteristic, trait, dead)
36
deceased(feature, state, split, dead)
35
old(feature, characteristic, trait, dead)
34
demode(feature, characteristic, trait, odd)
34
out-of-date(feature, characteristic, trait, dead)
34
superannuated(feature, characteristic, trait, dead)
33
outdated(feature, characteristic, trait, odd)
24
fallen(feature, state, dead, death)
24
passed(feature, state, split, dead)
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APASmart Define. (2016). extinct thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/extinct/thesaurus/synonyms
ChicagoSmart Define. 2016. "extinct thesaurus" https://smartdefine.org/extinct/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, extinct thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/extinct/thesaurus/synonyms>.
MLASmart Define. "extinct thesaurus" 10 February 2016. Web. 20 September 2026. <https://smartdefine.org/extinct/thesaurus/synonyms>