|Noah Webster's Dictionary|
(n.) The quality or state of being blameless; innocence.
Blamelessness (2 Occurrences)
Job 27:5 Be it far from me that I should justify you; till I die I will not remove my blamelessness from me. (DBY)
Job 31:6 (Let me be weighed in an even balance, and +God will take knowledge of my blamelessness;) (DBY)