Synonyms|453Antonyms|77|Broader|9Narrower|8Related|624
3
exterminated(adjective, dead, obsolete)
3
finished(split, dead, late, away, lacking)
3
gone by(verb, expression, adjective, phrasal verb, dead)
3
inert(adjective, lifeless, late, asleep, nonliving)
3
no longer existing(expression, idiom)
3
passed away(verb, phrasal verb, the past)
3
retired(split, away, lacking, finished, absent)
2
die(verb, inexistence)
2
disappear(verb, inexistence)
2
exhausted
2
kaput
2
absent(split, negative, away, lacking, finished)
2
astray(split, away, lacking, finished, absent)
2
at rest(expression, adjective, idiom, live)
2
away(split, lacking, finished, absent, left)
2
behind the times(expression, idiom, odd, old, primitive)
2
blown over(verb, phrasal verb, the past)
2
demised(adjective, death)
2
has-been
2
idle(adjective, dull, cold, lifeless, nonliving)
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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>