| impractical(adjective, unreasonable, unsound, unrealistic) | |
| silly(adjective, foolish, absurd, giddy) | |
| unrealistic(adjective, practical, believable) | |
| useless | |
| crazy | |
| dysfunctional(work, feature, state, adjective, function) | |
| unorganized | |
| romantic | |
| daydreamer | |
| insane | |
| sentimental | |
| theoretical | |
| unattainable(adjective, reasonable, unreasonable, unsound) | |
| unworkable(adjective, unreasonable, unsound) | |
| wild | |
| green | |
| quixotic | |
| visionary(adjective, romantic, idealized) | |
| worthless(adjective, unreasonable, unsound) | |
| impossible(adjective, reasonable, sensible, unreasonable, unsound) |
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| APA | Smart Define. (2016). practical thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/practical/thesaurus/antonyms |
| Chicago | Smart Define. 2016. "practical thesaurus" https://smartdefine.org/practical/thesaurus/antonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, practical thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/practical/thesaurus/antonyms>. |
| MLA | Smart Define. "practical thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/practical/thesaurus/antonyms> |