8
hopeless(adjective, pessimistic, futile)
8
irretrievable(adjective, complete, severe, fixed, absolute)
8
mazed
8
mislaid(adjective, missing, misplaced)
8
missed(adjective, confused, out, wasted, bewildered)
8
misspent(adjective, dead, wasted, destroyed, extinct)
8
obliterated(verb, adjective, dead, gone, abandoned)
8
stray(adjective, seek, abandoned, wandering)
7
befuddled
7
dreamy(adjective, careless, indifferent, negative, apathetic)
7
forfeit(adjective, confused, out, gone, bewildered)
7
irreclaimable(adjective, depraved)
7
past(adjective, split, lacking, finished, gone)
6
absentminded(adjective, careless, indifferent, apathetic, distracted)
6
abstracted(adjective, set, intense, careless, distant)
6
away(split, lacking, finished, removed, absent)
6
bygone(adjective, past, destroyed, extinct)
6
distrait(adjective, careless, indifferent, apathetic, remote)
6
down the drain(expression, adjective, idiom, split, lacking)
6
exhausted(verb, inexistence)
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APASmart Define. (2016). lost thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/lost/thesaurus/synonyms
ChicagoSmart Define. 2016. "lost thesaurus" https://smartdefine.org/lost/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, lost thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/lost/thesaurus/synonyms>.
MLASmart Define. "lost thesaurus" 17 February 2016. Web. 20 September 2026. <https://smartdefine.org/lost/thesaurus/synonyms>