from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To retract (something said).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To withdraw, retract (something said).
- v. To not have said (since this is physically impossible usually in the subjunctive, as I wish I could unsay).
from the GNU version of the Collaborative International Dictionary of English
- transitive v. To recant or recall, as what has been said; to refract; to take back again; to make as if not said.
from The Century Dictionary and Cyclopedia
- To recant or recall after having been said; retract; take back: as, to unsay one's words.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. take back what one has said
From un- + say. (Wiktionary)