1
disapproved(adjective, odd, old, primitive, unfashionable)
1
discontinue
1
disintegrated(split, away, lacking, finished, absent)
1
displaced(split, away, lacking, finished, absent)
1
dissipated(split, dead, away, lacking, finished)
1
dissolve(verb, inexistence)
1
dissolved(split, away, lacking, finished, absent)
1
down memory lane(expression, adjective, idiom, dead, past)
1
dried up(expression, split, away, lacking, finished)
1
erased(adjective, forgotten)
1
erstwhile(adjective, dead, past, lost, previous)
1
examine
1
expunged
1
extinction
1
extinguish
1
former(adjective, dead, late, past, lost)
1
gone-by
1
gone away
1
gone glimmering
1
gone out
10 years ago|11k views|share |citing 
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>