apt to forget; that forgets: a forgetful person.
heedless or neglectful (often followed by of): to be forgetful of others.
bringing on oblivion: forgetful slumber.

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 for forgetful Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for unforgetful

Historical Examples of unforgetful

  • It was strange that reserved, unforgiving, and yet not unforgetful temperament of his!

    Young Tom Bowling

    J.C. Hutcheson

  • Orcus has heard my vow, and it is written in the book of the unforgetful Hades.

    The Last Days of Pompeii

    Edward George Bulwer-Lytton

  • It is a place of refuge, of ineffable tranquillity, of unforgetful tenderness.

  • He strolled through life, and all life was a play of which he became the easy-going but unforgetful critic.

    Ave Roma Immortalis, Vol. 1

    Francis Marion Crawford

British Dictionary definitions for unforgetful



tending to forget
(often postpositive foll by of) inattentive (to) or neglectful (of)
poetic causing loss of memory
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 unforgetful



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

Online Etymology Dictionary, © 2010 Douglas Harper