The meaning of ARBITRARY is chosen, decided, etc. seemingly at random or on a whim rather than in a reasoned or methodical way; also : random. How to use arbitrary in a sentence.

ARBITRARY definition: subject to individual will or judgment without restriction; contingent solely upon one's discretion. See examples of arbitrary used in a sentence.

ARBITRARY meaning: 1. based on chance rather than being planned or based on reason: 2. using unlimited personal power…. Learn more.

Definition of arbitrary adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

If you describe an action, rule, or decision as arbitrary, you think that it is not based on any principle, plan, or system. It often seems unfair because of this.

May 3, 2026 · arbitrary (comparative more arbitrary, superlative most arbitrary) (usually of a decision) Based on individual discretion or judgment; not based on any objective distinction, perhaps even …

Arbitrary definition: Determined by chance, whim, or impulse, and not by necessity, reason, or principle.

Something that's arbitrary seems like it's chosen at random instead of following a consistent rule. Team members would dislike their coach using a totally arbitrary method to pick starting players.

There are six meanings listed in OED's entry for the word arbitrary, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

1. subject to individual will or judgment without restriction; contingent solely upon one's discretion: an arbitrary decision. 2. decided by a judge or arbiter rather than by a law or statute. 3. having unlimited …