75 entries under expression topic. ×
| no more(adjective, idiom, split, lifeless) | |
| out of date(adjective, idiom) | |
| gone by(verb, adjective, phrasal verb, dead) | |
| no longer existing | |
| at rest(adjective, idiom, live) | |
| behind the times(idiom, odd, old, primitive) | |
| of old(dead, odd, old, past) | |
| out of style(idiom, odd, old, primitive) | |
| down the drain(idiom, split, lacking, finished) | |
| burned up(split, away, lacking, finished) | |
| dead and buried | |
| dead and gone(adjective, idiom, dead, death) | |
| dead as nits(idiom, death) | |
| die out(verb, phrasal verb, inexistence) | |
| died out(adjective, missing, nonexistent, vanished) | |
| down memory lane(adjective, idiom, dead, past) | |
| dried up(split, away, lacking, finished) | |
| grown old(odd, old, primitive, unfashionable) | |
| in oblivion(adjective, dead, past, lost) | |
| lost to sight |
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| APA | Smart Define. (2016). extinct thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/extinct/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "extinct thesaurus" https://smartdefine.org/extinct/thesaurus/synonyms (accessed September 20, 2026). |
| Harvard | Smart Define 2016, extinct thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/extinct/thesaurus/synonyms>. |
| MLA | Smart Define. "extinct thesaurus" 10 February 2016. Web. 20 September 2026. <https://smartdefine.org/extinct/thesaurus/synonyms> |