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Synonyms

unintentional

American  
[uhn-in-ten-shuh-nl] / ˌʌn ɪnˈtɛn ʃə nl /

adjective

  1. not intentional or deliberate.

    an unintentional omission from the list.

    Synonyms:
    inadvertent, accidental
    Antonyms:
    planned, intentional

unintentional British  
/ ˌʌnɪnˈtɛnʃənəl /

adjective

  1. not deliberate; accidental

    the killing had been unintentional

"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

Other Word Forms

Etymology

Origin of unintentional

First recorded in 1775–85; un- 1 + intentional

Explanation

If an action is lacking a specific intent or plan, it can be described as unintentional. If you didn't mean to burp during Thanksgiving dinner, it was unintentional. If you grow an unintentional watermelon plant in your yard, it means you didn't plant it on purpose. It may be an unintentional result of last month's epic watermelon seed spitting contest. A little boy might cut his own hair into an unintentional Mohawk, and your wrong turn in an unfamiliar city might result in an unintentional visit to the zoo. The root word is the Latin intentionem, "a stretching out, straining, exertion, or effort," plus the prefix un, or "not."

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Vocabulary lists containing unintentional

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.

See Examples For:

Skydance is a poetic term with some definite “Star Wars” overtones and perhaps unintentional symbolism.

From Los Angeles Times ● Oct. 2, 2026

A new California law will narrow the laundry list of food date labels on products to two, eliminating consumer confusion and halting the unintentional food waste that has resulted.

From Los Angeles Times ● Jun. 26, 2026

Bycatch – the unintentional capture of non-target species – is causing increasing concern to conservationists.

From BBC ● Jun. 18, 2026

But it can remove unintentional penalties — and acknowledge realities millions of families already face.

From MarketWatch ● Jun. 2, 2026

A spokesman for the Beretta company called this unlikely because the gun’s double-action trigger was designed to prevent unintentional firing.

From "The New Jim Crow" by Michelle Alexander

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