Wiktionary
undeception
n. The point of being undeceived or freed from a misconception.
Usage examples of "undeception".
Norbert was not clear sighted enough, or that he did not perfectly know the town, and even by experience, the very branch of imposition now in practice upon him: but we had his passion our friend so much, he was so blinded and hurried on by it, that he would have thought any undeception a very ill office done to his pleasure.
Cole only smil'd at my ignorance, and said nothing towards my undeception, which was not affected but by ocular demonstration, some months after, which a most singular accident furnish'd me, and which I will here set down, that I may not return again to so disagreeable a subject.