Sentence:  The living in this manner with him, and his with me, was certainly the most <WSD>undesigned</WSD> thing in the world; he often protested to me, that when he became first acquainted with me, and even to the very night when we first broke in upon our rules, he never had the least design of lying with me; that he always had a sincere affection for me, but not the least real inclination to do what he had done. 
Meaning of the word marked with <WSD> tags:  Not designed, not intended.