from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Feeling or showing no remorse, shame, or embarrassment:
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. feeling or showing no shame, embarrassment or remorse
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. used of persons or their behavior; feeling no shame
un- + ashamed (Wiktionary)