arbitrary

[ahr-bi-trer-ee]

adjective

1. subject to individual will or judgment without restriction; contingent solely upon one's discretion.

   an arbitrary decision.

2. decided by a judge or arbiter rather than by a law or statute.

3. having unlimited power; uncontrolled or unrestricted by law; despotic; tyrannical.

   an arbitrary government.

4. based on whim or personal preference, without reason or pattern; random.

   This is an unusual encyclopedia, arranged by topics in a more or less arbitrary order.

5. Mathematics.,  undetermined; not assigned a specific value.

   an arbitrary constant.

noun

plural

arbitraries 

1. Printing.,  arbitraries, (in Britain) peculiar.

arbitrary

/ ˈɑːbɪtrərɪ /

adjective

1. founded on or subject to personal whims, prejudices, etc; capricious

2. having only relative application or relevance; not absolute

3. (of a government, ruler, etc) despotic or dictatorial

4. maths not representing any specific value

   an arbitrary constant

5. law (esp of a penalty or punishment) not laid down by statute; within the court's discretion

Other Word Forms

• arbitrarily adverb
• arbitrariness noun
• nonarbitrary adjective
• unarbitrary adjective

Word History and Origins

Origin of arbitrary¹

First recorded in 1400–50; late Middle English, from Latin arbitrārius “uncertain” (i.e., depending on an arbiter's decision); arbiter, -ary

Word History and Origins

Origin of arbitrary¹

C15: from Latin arbitrārius arranged through arbitration, uncertain

Example Sentences

"Both sides have deliberately targeted civilians through attacks, summary executions, arbitrary detention, torture, and inhuman treatment in detention facilities, including denial of food, sanitation, and medical care," said Fact-Finding Mission chair, Mohamed Chande Othman.

From BBC

But he said the Online Safety Act gave Ofcom "the most extraordinary and arbitrary powers" and that his party would repeal it, if elected to government.

From BBC

Prof Moffett said that the use of force in this case could amount to an "extrajudicial arbitrary killing" and "a fundamental violation of human rights".

From BBC

"Despite sustained engagement and assurances sought over the last year, the arbitrary detention of UN staff, NGO workers and civil society has continued," Grundberg said.

From BBC

He said the sudden halt to research grants violated a federal procedural law because it was “arbitrary” and poorly explained.

From Los Angeles Times

Related Words

• capricious 
• discretionary 
• erratic 
• frivolous 
• inconsistent 
• irrational 
• irresponsible 
• random 
• subjective 
• unreasonable 
• willful