Definition of "implacableness" [im•pla•ca•ble•ness]

• The quality of being implacable. (noun)

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• "There is not a single instance in which any shadow of implacableness lurked for an enemy who had repented or fallen into misfortune; and if his resentment was constantly aflame against the ignoble, it instantly expired and changed into warm-hearted pity, when the ignoble became either penitent or miserable."
• "Indeed, if I had not undoubted reason, as I said, to believe the continuance of their antipathy to me, and implacableness to her, I should be apt to think there might be some foundation for my"
• "She is very ill; the worse for some new instances of the implacableness of her relations."