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inadvertent

[in-uh d-vur-tnt]
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adjective
  1. unintentional: an inadvertent insult.
  2. not attentive; heedless.
  3. of, relating to, or characterized by lack of attention.
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Origin of inadvertent

1645–55; abstracted from inadvertence, inadvertency; see -ent
Related formsin·ad·vert·ent·ly, adverb

Synonyms

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2. inattentive. 3. thoughtless, careless, negligent.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for inadvertent

inadvertent

adjective
  1. failing to act carefully or considerately; inattentive
  2. resulting from heedless action; unintentional
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Derived Formsinadvertently, 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

Word Origin and History for inadvertent

adj.

1650s, back-formation from inadvertence.

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Online Etymology Dictionary, © 2010 Douglas Harper