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forgetful

[fer-get-fuh l]
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adjective
  1. apt to forget; that forgets: a forgetful person.
  2. heedless or neglectful (often followed by of): to be forgetful of others.
  3. bringing on oblivion: forgetful slumber.
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Origin of forgetful

Middle English word dating back to 1350–1400; see origin at forget, -ful
Related formsfor·get·ful·ly, adverbfor·get·ful·ness, nounqua·si-for·get·ful, adjectivequa·si-for·get·ful·ly, adverbun·for·get·ful, adjectiveun·for·get·ful·ly, adverbun·for·get·ful·ness, noun

Synonyms

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1. absent-minded, inattentive, unmindful.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for forgetfulness

forgetful

adjective
  1. tending to forget
  2. (often postpositive foll by of) inattentive (to) or neglectful (of)
  3. poetic causing loss of memory
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Derived Formsforgetfully, adverbforgetfulness, noun
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 forgetfulness

forgetful

adj.

late 14c., from forget + -ful. Related: Forgetfully; forgetfulness.

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Online Etymology Dictionary, © 2010 Douglas Harper