I wanted to undeceive Tom.
Source: tatoeba (8626424)
Ranked by relevance and common usage.
Keep "undeceive" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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6 total sentences available.
I wanted to undeceive Tom.
Source: tatoeba (8626424)
[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; […]
Source: wiktionary
[…] 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.
Source: wiktionary
Undeceived in her expectations and chilled in her hopes, the heart of Cecilia no longer struggled to sustain its dignity, or conceal its tenderness […]
Source: wiktionary
Showing 4 of 6 available sentences.
Closest matches include awaken, correct, debunk, disabuse, disabuses.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.