226. ARBITRARY Meaning - Determined by chance, whim, or impulse, and not by necessity, reason, or principle. Synonyms - random, chance, whimsical, capricious. Antonyms - reasoned, sound, rational, logical. Usage - Arbitrary colors(colours) used to paint the above picture. PREVIOUS: A List 225. Arbiter INDEX NEXT: A List 227. Arboreal ...more»