| capricious(foolish, stupid, irrational, arbitrary, perverse) | |
| casual(adjective, unimportant, trivial, minor, unfeeling) | |
| cold-blooded(adjective, bad, hard, tough, severe) | |
| dizzy | |
| doltish(dull, weak, simple, careless, silly) | |
| eccentric(adjective, silly, foolish, fantastic, absurd) | |
| fool | |
| forgetful(adjective, silly, foolish, unknowing, unnecessary) | |
| hard(adjective, tough, severe, cruel, unsympathetic) | |
| hard-hearted(adjective, bad, hard, tough, severe) | |
| harebrained(weak, simple, silly, foolish, fantastic) | |
| idle | |
| ill-judged(impractical, half-baked, doomed) | |
| implausible(adjective, false, unreasonable, absurd, irrational) | |
| indiscernible | |
| indiscriminate(adjective, insignificant, irregular, empty, unwarranted) | |
| ineffective | |
| ineffectual | |
| inhuman(adjective, bad, hard, tough, severe) | |
| iron-hearted(adjective, bad, hard, tough, severe) |
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| APA | Smart Define. (2016). senseless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/senseless/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "senseless thesaurus" https://smartdefine.org/senseless/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2016, senseless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/senseless/thesaurus/synonyms>. |
| MLA | Smart Define. "senseless thesaurus" 14 March 2016. Web. 21 September 2026. <https://smartdefine.org/senseless/thesaurus/synonyms> |