- Definitions|2
- Thesaurus|1.2k
- Abbreviations|0
29 entries under invalid topic. ×
| fruitless(adjective, weak, inferior, inadequate, limited) | |
| ineffectual(adjective, weak, inadequate, limited, feeble) | |
| useless(adjective, weak, failure, inferior, inadequate) | |
| vain(adjective, weak, inferior, short, inadequate) | |
| ineffective(adjective, weak, useless, trivial, failing) | |
| unfruitful(adjective, inferior, inadequate, limited, feeble) | |
| worthless(adjective, inferior, inadequate, limited, feeble) | |
| sterile(adjective, useless, trivial, insufficient, hopeless) | |
| bad(adjective, unhappy, inappropriate, adverse, damaging) | |
| dead(adjective, meaningless, unsubstantiated, unsupported) | |
| inoperative(adjective, inferior, inadequate, limited, feeble) | |
| nugatory(adjective, inferior, inadequate, limited, feeble) | |
| avoided(adjective, meaningless, unsubstantiated, unsupported) | |
| forceless(adjective, inferior, inadequate, limited, feeble) | |
| negated(adjective, meaningless, unsubstantiated, unsupported) | |
| not viable(expression, adjective, meaningless, unsubstantiated) | |
| null(adjective, inferior, inadequate, limited, feeble) | |
| null and void(expression, adjective, idiom, inferior, inadequate) | |
| set aside(expression, adjective, meaningless, unsubstantiated) | |
| unconfirmed(adjective, meaningless, unsubstantiated, unsupported) |
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| APA | Smart Define. (2016). unsuccessful thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/unsuccessful/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "unsuccessful thesaurus" https://smartdefine.org/unsuccessful/thesaurus/synonyms (accessed September 25, 2026). |
| Harvard | Smart Define 2016, unsuccessful thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/unsuccessful/thesaurus/synonyms>. |
| MLA | Smart Define. "unsuccessful thesaurus" 24 March 2016. Web. 25 September 2026. <https://smartdefine.org/unsuccessful/thesaurus/synonyms> |