| unusuable(adjective, weak, stupid, idle, useless) | |
| unwise(adjective, wild, unreasonable, useless, absurd) | |
| wretched(adjective, poor, base, inferior, insignificant) | |
| anachronistic(tired, bent, unfashionable, outdated, obsolete) | |
| antediluvian(tired, bent, unfashionable, outdated, obsolete) | |
| bent(tired, unfashionable, outdated, obsolete, antiquated) | |
| bust | |
| dinosaur(tired, bent, unfashionable, outdated, obsolete) | |
| dud | |
| duff | |
| effete | |
| has-been(tired, bent, unfashionable, outdated, obsolete) | |
| horse and buggy(expression, tired, bent, unfashionable, obsolete) | |
| impotent | |
| irrealizable(adjective, impracticable) | |
| moth-eaten(tired, bent, unfashionable, outdated, obsolete) | |
| no-go(adjective, impracticable) | |
| no go(expression, wild, unreasonable, useless, absurd) | |
| no use(expression, adjective, insignificant, useless, mediocre) | |
| non-existent |
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| APA | Smart Define. (2016). unusable thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/unusable/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unusable thesaurus" https://smartdefine.org/unusable/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, unusable thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/unusable/thesaurus/synonyms>. |
| MLA | Smart Define. "unusable thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/unusable/thesaurus/synonyms> |