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

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

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

Feb 9, 2026 · What does arbitrary mean? Learn the arbitrary meaning and definition in simple words, “arbitrarily” meaning, synonyms, and 15 sentence examples, plus law, math, statistics, physics, and …

Find 81 different ways to say ARBITRARY, along with antonyms, related words, and example sentences at Thesaurus.com.

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.