from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The state of being ungrateful.
from The Century Dictionary and Cyclopedia
- n. The state or character of being ungrateful, in any sense.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a lack of gratitude
ungrateful + -ness (Wiktionary)