from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The state or condition of being unthoughtful.
from The Century Dictionary and Cyclopedia
- n. The state or character of being thoughtless; thoughtlessness.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the trait of not thinking carefully before acting
unthoughtful + -ness (Wiktionary)