| aleatory | |
| anomalous(irregular, unpredictable, unreliable, unconformity) | |
| assertive | |
| authoritative | |
| autocratical(adjective, full, absolute, over, politics) | |
| autonomous(full, absolute) | |
| biased(adjective, wrong, foolish, stupid, dishonest) | |
| casual(adjective, careless, chance, random, haphazard) | |
| character | |
| elective(open, free, voluntary) | |
| flaky(adjective, unusual, careless, unstable, unreasonable) | |
| fleeting(adjective, capricious, motiveless) | |
| flitting(adjective, capricious, motiveless) | |
| fluctuating(adjective, changeable, erratic, random, capricious) | |
| foolish(stupid, senseless, irrational, perverse) | |
| free(open, voluntary, elective) | |
| grinding | |
| high and mighty(expression, adjective, idiom, insolence) | |
| illiberal | |
| inconsiderate |
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| APA | Smart Define. (2015). arbitrary thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/arbitrary/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "arbitrary thesaurus" https://smartdefine.org/arbitrary/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, arbitrary thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/arbitrary/thesaurus/synonyms>. |
| MLA | Smart Define. "arbitrary thesaurus" 13 April 2015. Web. 21 September 2026. <https://smartdefine.org/arbitrary/thesaurus/synonyms> |