undeceive

verb

1. (transitive)To free from misconception, deception or error.

   “[I]t is a deed of higheſt charitie to help undeceive the people, and a vvork vvorthieſt your autoritie, in all things els authors, aſſertors and novv recoverers of our libertie, to deliver us, the only people of all Proteſtants left ſtill undeliverd, from the oppreſſions of a Simonious decimating clergie; […]”

   “[…] Marcasites, I say, being thus fitted to delude the unskilful, I have had much ado to undeceive some, that brought or sent me them from America, of the pleasing Confidence they had entertained, that these promising Fossiles were Lumps of rich Ore of Gold, or Silver.”

   “Undeceived in her expectations and chilled in her hopes, the heart of Cecilia no longer struggled to sustain its dignity, or conceal its tenderness […]”

   “If you think that this loss has broken my heart undeceive yourself, for such as I live years in an hour and show no sign.”

   “Early every morning she made something she called (and believed to be) coffee for George, and he was gallant enough not to undeceive her.”