- Definitions|2
- Thesaurus|327
- Abbreviations|0
| treacherous(adjective, apathetic, inconstant) | |
| uncareful(adjective, careless, untrustworthy) | |
| uncertain(adjective, weak, soft) | |
| unconscientious(adjective, careless, untrustworthy) | |
| undecided(adjective, apathetic, inconstant) | |
| undependable(adjective, weak, soft) | |
| unethical(adjective, improper) | |
| unfair(adjective, apathetic, inconstant) | |
| unfaithful(adjective, apathetic, inconstant) | |
| unfixed(adjective, weak, soft) | |
| unimportant(adjective, obscure) | |
| unjust(adjective, careless, untrustworthy) | |
| unkind | |
| unknown(adjective, bad) | |
| unreal(adjective, weak, soft) | |
| unreliable(adjective, bad) | |
| unrespectable(adjective, weak, soft) | |
| unrespected(adjective, obscure) | |
| unrighteous(adjective, improper) | |
| unscrupulous(adjective, careless, untrustworthy) |
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| APA | Smart Define. (2015). high-principled thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/high-principled/thesaurus/antonyms |
| Chicago | Smart Define. 2015. "high-principled thesaurus" https://smartdefine.org/high-principled/thesaurus/antonyms (accessed September 28, 2026). |
| Harvard | Smart Define 2015, high-principled thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/high-principled/thesaurus/antonyms>. |
| MLA | Smart Define. "high-principled thesaurus" 14 April 2015. Web. 28 September 2026. <https://smartdefine.org/high-principled/thesaurus/antonyms> |