128 entries under adjective topic. ×
| exanimate(dull, cold, dead, late) | |
| extinguished(dead, obsolete) | |
| nonexistent(real, fictional) | |
| asleep(dead, lifeless, late, live) | |
| cold(dull, informal, dead, lifeless) | |
| disappeared(split, quit, dead, lost) | |
| dormant | |
| no more(expression, idiom, split, lifeless) | |
| out of date(expression, idiom) | |
| outworn(dead, odd, out, old) | |
| terminated(dead, obsolete) | |
| irrecoverable(forgotten, the past) | |
| old hat | |
| superseded(dead, obsolete) | |
| disused | |
| done for(dead, obsolete) | |
| exterminated(dead, obsolete) | |
| gone by(verb, expression, phrasal verb, dead) | |
| inert(lifeless, late, asleep, nonliving) | |
| at rest(expression, idiom, live) |
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| APA | Smart Define. (2016). extinct thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/extinct/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "extinct thesaurus" https://smartdefine.org/extinct/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, extinct thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/extinct/thesaurus/synonyms>. |
| MLA | Smart Define. "extinct thesaurus" 10 February 2016. Web. 22 September 2026. <https://smartdefine.org/extinct/thesaurus/synonyms> |