Another word for arbitrary

arbitrary Synonyms

arbitrary

modif.

Capricious; said of people
willful, capricious, self-assertive, frivolous, injudicious, wayward, offhand, erratic, impulsive, inconsistent, crotchety, irresponsible, opinionated, supercilious, self-willed, whimsical, unreasonable, irrational, toplofty*.
Antonyms reasonable*, consistent, rational.
Without adequate determining principle: said of actions or ideas
subjective, unscientific, unreasonable, unpredictable, capricious, random, chance, temporary, unpremeditated, irrational, motiveless, unaccountable, superficial, whimsical, fanciful, freakish, determined by no principle, depending on the will alone, optional, uncertain, inconsistent, discretionary, subject to individual will, half-baked*.
Antonyms judicious*, scientific, considered.
Despotic
imperious, dictatorial, tyrannical, dogmatic; see absolute 3, autocratic 1. See syn. study at dogmatic.

WEBSTER’S NEW WORLD® ROGET’S A-Z THESAURUS by Charlton Laird and the editors of Webster’s New World dictionaries. Copyright © 1999 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.