undeceive

[ uhn-di-seev ]

/ ˌʌn dɪˈsiv /

to free from deception, fallacy, or mistake.

Origin of undeceive

First recorded in 1590–1600; un-² + deceive

un·de·ceiv·a·ble, adjective un·de·ceiv·er, noun

Thinking it over in every way, he concluded at last that there was no necessity for him, at present, to undeceive the Anahuans.

By Right of Conquest |G. A. Henty
"Well, it was not in my heart to undeceive her when the deed was done," said the sailor of former days.

The Mayor of Casterbridge |Thomas Hardy
The Osmia considers herself at home; and the other does nothing to undeceive her.

The Mason-bees |J. Henri Fabre
Yet I would not undeceive her, for I wanted her to bring matters to a climax.

The Memoires of Casanova, Complete |Jacques Casanova de Seingalt

Moreover, good dame, I must undeceive you, should you have relied on my courage for some desperate plan.

Gomez Arias |Joaqun Telesforo de Trueba y Coso

undeceive

/ (ˌʌndɪˈsiːv) /

(tr) to reveal the truth to (someone previously misled or deceived); enlighten

undeceivable, adjective undeceiver, noun