from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To free from illusion or deception.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To free from misconception, deception or error.
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To cause to be no longer deceived; to free from deception, fraud, fallacy, or mistake.
from The Century Dictionary and Cyclopedia
- To free from deception, cheat, fallacy, or mistake; open one's eyes.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. free from deception or illusion
Their avowed object was to present a petition personally to the Prince Regent, that they might "undeceive" him; as if such a thing were possible, or, being possible, would be of the slightest service.
Pray undeceive my Mother with regard to the agreeable mistake as to the repairs —
'That is indeed unfortunate; but if you are really blameless, cannot you undeceive them?'
Mrs. Setliffe saw his mistake, appreciated the naive compliment, and decided not to undeceive him.
In his poem "Shiloh" (the first massive battle of the Civil War with almost 24,000 casualties), Herman Melville writes "What like a bullet can undeceive".
But all that would now change as “the adoption and prosecution of the energetic policy proposed must soon undeceive them.”
"You don't have to speak to the web," Dor said quickly, though he was sorry to undeceive her.
If they regard it as a luxury for me to have a private secretary, why should I undeceive them?
Camilla again denied the charge, and strove to prevail with her to undeceive the Baronet from any false expectations.
And how could she undeceive him, while retaining so improper a mark of his dependence upon her favour?
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