Dictionary.com
Thesaurus.com
Synonyms

arbitrarily

American  
[ahr-bi-trair-uh-lee] / ˌɑr bɪˈtrɛər ə li /

adverb

  1. based on the judgment or will of an individual.

    The Fourth Amendment protects my right to not be arbitrarily searched.

  2. without an apparent reason or pattern; randomly; capriciously.

    There is no need to stop living life to its fullest simply because we have reached some arbitrarily set age for what broader society calls “retirement.”


Other Word Forms

Etymology

Origin of arbitrarily

arbitrary ( def. ) + -ly

Explanation

Something said or done arbitrarily is done randomly or without much thought — like when you arbitrarily eat whatever happens to be on the buffet table at your cousin's wedding. The adverb arbitrarily describes something that's done haphazardly, based on random chance or on your own whim of the moment. If you go to a movie and know nothing about anything that's playing, you might arbitrarily choose one — based on the titles, the look of the posters, or on nothing at all. When there's not much reason behind your actions, they're done arbitrarily.

Keep Reading on Vocabulary.com

Vocabulary lists containing arbitrarily

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.

They also misled investors, charged undisclosed fees and arbitrarily inflated prices charged to investors in StraightPath funds, according to the Justice Department.

From The Wall Street Journal • May 21, 2026

The travel advisory issued last week says visitors may be arbitrarily denied entry to the country, detained in “inhumane” conditions or subjected to invasive phone and social media searches.

From Los Angeles Times • May 1, 2026

The firm said other major platforms such as Microsoft, Snapchat and OpenAI had been arbitrarily excluded.

From Barron's • Apr. 28, 2026

"To arbitrarily set elevated prices and demand Fifa absorb these costs is unprecedented," Fifa's Schirgi added.

From BBC • Apr. 18, 2026

God could have made the universe in many different ways; he has arbitrarily chosen to make it as it is, and the order it displays is an order he has chosen to impose upon it.

From "The Invention of Science" by David Wootton

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "arbitrarily" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com