Definition of arbitrary in English:

arbitrary

Line breaks: ar¦bi|trary
Pronunciation: /ˈɑːbɪt(rə)ri
 
/

adjective

1Based on random choice or personal whim, rather than any reason or system: an arbitrary decision
More example sentences
  • The numbering of years is a cultural artifact based on some rather arbitrary decisions made along the way.
  • I prefer to have my laws built on reason rather than arbitrary morality.
  • This numbering system is an arbitrary designation based on small amino acid sequence differences.
Synonyms
capricious, whimsical, random, chance, erratic, unpredictable, inconsistent, wild, hit-or-miss, haphazard, casual; unmotivated, motiveless, unreasoned, unreasonable, unsupported, irrational, illogical, groundless, unjustifiable, unjustified, wanton; discretionary, personal, subjective
2(Of power or a ruling body) unrestrained and autocratic in the use of authority: a country under arbitrary government
More example sentences
  • These kings have not unlimited or arbitrary power, and the generals do more by example than by authority.
  • By the time of the Revolution, the standing army had become a symbol of repressive authority and arbitrary rule.
  • Freedom from arbitrary power is a great good - but so is the avoidance of anarchy.
Synonyms
3 Mathematics (Of a constant or other quantity) of unspecified value.
More example sentences
  • In contemporary frameworks, the rule of generalization invokes a singular term, the arbitrary constant introduced into the text.
  • How you can tell whether a binary number of arbitrary size is divisible by 10 without looking at the whole number?
  • He defined differential operators of arbitrary order D t.

Origin

late Middle English (in the sense 'dependent on one's will or pleasure, discretionary'): from Latin arbitrarius, from arbiter 'judge, supreme ruler', perhaps influenced by French arbitraire.

Derivatives

arbitrarily

adverb
More example sentences
  • This series of protests clearly did not occur arbitrarily or randomly.
  • Anyone who falls within this date, decided arbitrarily without any logic, is promised the moon.
  • Judgement is not being exercised by the users as they surf the net: it is being exercised arbitrarily by filtering software.

arbitrariness

noun
More example sentences
  • African territorial boundaries are however fraught with difficulties because of the arbitrariness with which they were drawn by the colonial authorities.
  • Bulgaria will not tolerate political arbitrariness against the defendant medics.
  • The race itself - a 1-meter dash - pokes fun at the sheer arbitrariness of modern athletic contests.

Definition of arbitrary in:

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