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ungrateful

[uhn-greyt-fuh l]
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adjective
  1. unappreciative; not displaying gratitude; not giving due return or recompense for benefits conferred: ungrateful heirs.
  2. unpleasant; distasteful; repellent: an ungrateful task.

Origin of ungrateful

First recorded in 1545–55; un-1 + grateful
Related formsun·grate·ful·ly, adverbun·grate·ful·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for ungrateful

ungrateful

adjective
  1. not grateful or thankful
  2. unrewarding or unpleasant; thankless
  3. (of land) failing to increase fertility in response to cultivation
Derived Formsungratefully, adverbungratefulness, 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 ungrateful

adj.

1550s, from un- (1) "not" + grateful. Related: Ungratefully.

Online Etymology Dictionary, © 2010 Douglas Harper