80 entries under dead topic. ×

5
disappeared(adjective, split, quit, lost)
5
outworn(adjective, odd, out, old)
5
terminated(adjective, obsolete)
4
superseded(adjective, obsolete)
3
done for(adjective, obsolete)
3
exterminated(adjective, obsolete)
3
finished(split, late, away, lacking)
3
gone by(verb, expression, adjective, phrasal verb)
2
of old(expression, odd, old, past)
2
old-hat(adjective, odd, old, primitive)
2
old-time(odd, old, past, lost)
2
olden(adjective, odd, old, past)
2
oldfangled(odd, old, past, lost)
2
unfashionable(odd, out, old, primitive)
2
void(adjective, obsolete)
1
moldy(adjective, odd, out, old)
1
belated(adjective, past, lost, previous)
1
consumed(split, away, lacking, finished)
1
dead and gone(expression, adjective, idiom, death)
1
dissipated(split, away, lacking, finished)
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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>