n. The character or state of being faithless, in any sense of that word.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. unfaithfulness by virtue of being unreliable or treacherous
Word Usage
"In many respects, they find you antagonizing the same way they find Glenn Reynolds antagonizing - like Jesuits, they really think once they had you, they had the right to keep you, and your faithlessness is your failure, not theirs."