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[uhn-in-ten-shuh-nl] /ˌʌn ɪnˈtɛn ʃə nl/
not intentional or deliberate:
an unintentional omission from the list.
Origin of unintentional
First recorded in 1775-85; un-1 + intentional
Related forms
unintentionally, adverb
accidental, unplanned, inadvertent. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for unintentional
Contemporary Examples
Historical Examples
  • My father did them a hideous wrong, but it was an unintentional wrong.

    The Monster Men Edgar Rice Burroughs
  • “Yes, he is dead,” replied Tresler, with unintentional solemnity.

    The Night Riders Ridgwell Cullum
  • If I had believed the "garrulity," as she called it, to have been unintentional, I might have been flattered.

    Kent Knowles: Quahaug Joseph C. Lincoln
  • It was as unintentional as the birth of a thought in the head, and he heard nothing of it himself.

    Typhoon Joseph Conrad
  • “I told you that the shooting of the animal was unintentional,” he said.

    Out of the Depths

    Robert Ames Bennet
British Dictionary definitions for unintentional


not deliberate; accidental: the killing had been unintentional
Derived Forms
unintentionally, adverb
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
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Word Origin and History for unintentional

1782, from un- (1) "not" + intentional. Related: Unintentionally (1769).

Online Etymology Dictionary, © 2010 Douglas Harper
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