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Showing results for arbitrary. Search instead for arbitrar.
Definitions

arbitrary

[ahr-bi-trer-ee] / ˈɑr bɪˌtrɛr i /
ADJECTIVE
whimsical, chance
Synonyms
STRONGEST
capricious discretionary erratic frivolous inconsistent irrational irresponsible random subjective unreasonable willful
WEAK
approximate fanciful injudicious offhand optional supercilious superficial unaccountable unscientific wayward
Antonyms
STRONGEST
consistent definite dependable logical reasonable regular reliable sensible steady unchanging
WEAK
circumspect democratic rational reasoned supported
ADJECTIVE
dictatorial
Synonyms
STRONGEST
autocratic
WEAK
absolute bossy despotic dogmatic domineering downright flat out high-handed imperious magisterial monocratic no ifs ands or buts no joke overbearing peremptory straight out summary tyrannical tyrannous
Antonyms
WEAK
circumspect democratic rational reasonable reasoned supported

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

“It’s an arbitrary threshold that serves a few purposes.”

From MarketWatch • Apr. 10, 2026

Immigration advocates challenge ICE’s policy governing these arrests, arguing, among other things, that it was arbitrary and capricious under the Administrative Procedure Act.

From Slate • Mar. 27, 2026

In her ruling, she said the government's designation of Anthropic as a supply chain risk was "likely both contrary to law and arbitrary and capricious."

From Barron's • Mar. 26, 2026

Brendan O'Hara, vice chair of the all-parliamentary group for arbitrary detention and hostage affairs, previously told the BBC the Foremans were "innocent victims of a geopolitical power struggle".

From BBC • Mar. 26, 2026

But there’s an authoritative tone to her voice that makes you feel her appointment wasn’t arbitrary.

From "Mockingjay" by Suzanne Collins

Vocabulary lists containing arbitrary

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100 SAT Words Beginning with "A"

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The Declaration of Independence

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