- Definitions|2
- Thesaurus|364
- Abbreviations|0
59 entries under inadequate topic. ×
| ineffectual(adjective, skill, affect, feeble) | |
| useless(adjective, wild, inferior, affect) | |
| bootless(adjective, inferior, useless, trivial) | |
| unavailing(adjective, inferior, useless, trivial) | |
| vain(adjective, inferior, feeble, useless) | |
| fruitless(adjective, inferior, useless, trivial) | |
| futile(adjective, inferior, feeble, useless) | |
| inefficient(adjective, weak, skill, inferior, affect) | |
| inoperative(adjective, weak, skill, inferior) | |
| unsuccessful(adjective, inferior, limited, feeble) | |
| abortive(adjective, inferior, useless, trivial) | |
| unproductive(adjective, feeble, useless, trivial) | |
| impotent(adjective, weak, skill, inferior) | |
| nugatory(adjective, inferior, feeble, useless) | |
| feckless(adjective, inferior, limited, feeble) | |
| worthless(adjective, inferior, useless, trivial) | |
| barren(adjective, useless, trivial, unsound) | |
| null(adjective, inferior, feeble, useless) | |
| powerless(adjective, weak, skill, useless) | |
| incompetent(adjective, weak, skill, feeble) |
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| APA | Smart Define. (2016). inefficacious thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/inefficacious/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "inefficacious thesaurus" https://smartdefine.org/inefficacious/thesaurus/synonyms (accessed September 27, 2026). |
| Harvard | Smart Define 2016, inefficacious thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/inefficacious/thesaurus/synonyms>. |
| MLA | Smart Define. "inefficacious thesaurus" 24 March 2016. Web. 27 September 2026. <https://smartdefine.org/inefficacious/thesaurus/synonyms> |