Webster
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Webster’s Revised Unabridged Dictionary · 1913

Arbitrary

Ar′bi·tra·ry (är′bĭ·trā·ry̆), a. [L. arbitrarius, fr. arbiter: cf. F. arbitraire. See Arbiter.] 1. Depending on will or discretion; not governed by any fixed rules; as, an arbitrary decision; an arbitrary punishment.

It was wholly arbitrary in them to do so. Jer. Taylor.

Rank pretends to fix the value of every one, and is the most arbitrary of all things. Landor.

2. Exercised according to one's own will or caprice, and therefore conveying a notion of a tendency to abuse the possession of power.

Arbitrary power is most easily established on the ruins of liberty abused licentiousness. Washington.

3. Despotic; absolute in power; bound by no law; harsh and unforbearing; tyrannical; as, an arbitrary prince or government. Dryden.

Arbitrary constant, Arbitrary function (Math.), a quantity of function that is introduced into the solution of a problem, and to which any value or form may at will be given, so that the solution may be made to meet special requirements. — Arbitrary quantity (Math.), one to which any value can be assigned at pleasure.

Webster’s Revised Unabridged Dictionary, Noah Porter, editor (Springfield, Mass.: G. & C. Merriam, 1913). Public domain. Text as transcribed by MICRA, Inc., from Project Gutenberg. Changed for Deep Dive Bible: Greek, which our source spelled in Latin letters, set in Greek letters; entries of one spelling merged into one article; Greek words our source left out (shown as “?”), read from the 1898 printing, from the same plates (the Library of Congress’s copy), where the place could be found with certainty. Of the others, 1,362 (a word or a single letter each) were inferred by AI from the context by the dictionary’s own rules and are marked with a wavy underline (tap or point at one to see the note); the rest, which could not be inferred with confidence, are left as “?”.