4
irreclaimably
4
irrecoverably
4
irredeemably
4
irremediably
4
irreparably
4
irreversibly(adverb, irrevocably)
3
irrevocably
2
incorrigibly
2
irretrievable
2
unrecoverably
1
absolutely
1
clean
1
curelessly
1
for all time(expression, idiom, adverb, irrevocably)
1
forever(adverb, irrevocably)
1
helplessly
1
incurably
1
indefeasibly
1
irreplaceably
1
perfectly
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APASmart Define. (2015). irretrievably thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/irretrievably/thesaurus/synonyms
ChicagoSmart Define. 2015. "irretrievably thesaurus" https://smartdefine.org/irretrievably/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, irretrievably thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/irretrievably/thesaurus/synonyms>.
MLASmart Define. "irretrievably thesaurus" 13 April 2015. Web. 20 September 2026. <https://smartdefine.org/irretrievably/thesaurus/synonyms>