undeceive

[uhn-di-seev]

verb (used with object), un·de·ceived, un·de·ceiv·ing.

to free from deception, fallacy, or mistake.

Origin of undeceive

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

Related formsun·de·ceiv·a·ble, adjectiveun·de·ceiv·er, noun

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for undeceive

Historical Examples of undeceive

(To Argan) Sir, allow me to undeceive him, and to show him his mistake.
The Imaginary Invalid
Molire
It will be easy to undeceive the man—later—when you are saved.
Night and Morning, Complete
Edward Bulwer-Lytton
I hope that she is under a delusion: it will be easy for you to undeceive her.
A Hero of Our Time
M. Y. Lermontov
To no end did Nelly try to undeceive her father on this head.
The Daltons, Volume II (of II)
Charles James Lever
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

British Dictionary definitions for undeceive

undeceive

verb

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

Derived Formsundeceivable, adjectiveundeceiver, noun

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012