14
irrevocable(adjective, severe, fixed, hidden, stability)
12
irredeemable(adjective, hopelessness, unrecoverable)
12
lost(adjective, complete, severe, loss, fixed)
11
irreparable(adjective, unable, hopelessness)
9
incorrigible(adjective, hopelessness, unrecoverable)
9
irrecoverable(adjective, sad, anxious, worried, distressed)
9
irreversible(adjective, stability, hopelessness, irrevocable)
7
irremediable(adjective, hopelessness)
6
unretrievable
5
hopeless(adjective, loss)
5
incurable(adjective, hopelessness)
5
indefeasible
5
irreclaimable(adjective, hopelessness)
4
gone(adjective, sad, hidden, hopeless, forlorn)
4
permanent
4
remediless
4
unrecoverable
3
cureless
3
immedicable
3
immutable
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APASmart Define. (2015). irretrievable thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/irretrievable/thesaurus/synonyms
ChicagoSmart Define. 2015. "irretrievable thesaurus" https://smartdefine.org/irretrievable/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, irretrievable thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/irretrievable/thesaurus/synonyms>.
MLASmart Define. "irretrievable thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/irretrievable/thesaurus/synonyms>