| irreversible(adjective, irrevocable) | |
| kaput | |
| lifeless(adjective, dead) | |
| lonely | |
| long-lost | |
| loss | |
| lost to sight(expression, idiom) | |
| mooning(adjective, careless, remote, vague, distracted) | |
| mysterious(unknown, alien) | |
| napping | |
| no more(expression, split, away, lacking, finished) | |
| off-course(adjective, missing, strayed) | |
| out-of-date(adjective, dead, past, previous, obsolete) | |
| perished(adjective, destroyed, extinct, inexistence) | |
| removed(adjective, split, quit, careless, apathetic) | |
| scattered | |
| spout | |
| strange(adjective, mysterious, unknown, foreign, alien) | |
| unaware(adjective, distant, ignorant, distracted, absorbed) | |
| unconnected |
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| APA | Smart Define. (2016). lost thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/lost/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "lost thesaurus" https://smartdefine.org/lost/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, lost thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/lost/thesaurus/synonyms>. |
| MLA | Smart Define. "lost thesaurus" 17 February 2016. Web. 21 September 2026. <https://smartdefine.org/lost/thesaurus/synonyms> |