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Synonyms

aleatory

American  
[ey-lee-uh-tawr-ee, -tohr-ee, al-ee-] / ˈeɪ li əˌtɔr i, -ˌtoʊr i, ˈæl i- /
Also aleatoric

adjective

  1. Law. depending on a contingent event.

    an aleatory contract.

  2. of or relating to accidental causes; of luck or chance; unpredictable.

    an aleatory element.

  3. Music. employing the element of chance in the choice of tones, rests, durations, rhythms, dynamics, etc.


aleatory British  
/ -trɪ, ˌeɪlɪəˈtɒrɪk, ˈeɪlɪətərɪ /

adjective

  1. dependent on chance

  2. (esp of a musical composition) involving elements chosen at random by the performer

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of aleatory

1685–95; < Latin āleātōrius, equivalent to āleātōr- (stem of āleātor gambler ( āle ( a ) game of chance + -ātor -ator ) + -ius adj. suffix; see -tory 1

Explanation

Something aleatory is based on chance or randomness, like rolling dice in a game or picking a card from a shuffled deck, where the outcome is left entirely to luck. In contract law, an aleatory agreement — such as an insurance policy — depends on an uncertain event to trigger a payout. Beyond gaming and law contexts, aleatory elements appear in art and music, where randomness is embraced to create unique experiences every time. For example, in aleatory music, certain parts of the performance are left to the performer’s choice, making each rendition a bit different and unique. Embracing the element of chance reminds us that some of life’s most interesting moments come from the unexpected.

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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.

Aleatory interest in marriage and the function of religion.

From Folkways A Study of the Sociological Importance of Usages, Manners, Customs, Mores, and Morals by Sumner, William Graham

Aleatory, ā′lē-a-tō-ri, adj. depending on the throw of the dice: dependent on certain contingencies.

From Chambers's Twentieth Century Dictionary (part 1 of 4: A-D) by Various

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