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. 2019

Examples from the Web for undeceive

Historical Examples of undeceive

British Dictionary definitions for undeceive



(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