17 entries under unsound topic. ×
| impractical(adjective, unreasonable, unrealistic) | |
| unattainable(adjective, reasonable, unreasonable) | |
| unworkable(adjective, unreasonable) | |
| worthless(adjective, unreasonable) | |
| impossible(adjective, reasonable, sensible, unreasonable) | |
| irrational(adjective, unreasonable) | |
| incapable(adjective, unreasonable) | |
| inefficient(adjective, unreasonable) | |
| inexperienced(adjective, unreasonable) | |
| unfeasible(adjective, unreasonable) | |
| unreasonable(adjective, correct, right) | |
| unserviceable(adjective, unreasonable) | |
| unlikely(adjective, unreasonable) | |
| unproficient(adjective, unreasonable) | |
| unseasoned(adjective, unreasonable) | |
| unskilled(adjective, unreasonable) | |
| untrained(adjective, unreasonable) |
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| APA | Smart Define. (2016). practical thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/practical/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "practical thesaurus" https://smartdefine.org/practical/thesaurus/antonyms (accessed September 23, 2026). |
| Harvard | Smart Define 2016, practical thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/practical/thesaurus/antonyms>. |
| MLA | Smart Define. "practical thesaurus" 29 March 2016. Web. 23 September 2026. <https://smartdefine.org/practical/thesaurus/antonyms> |