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Otherwise unnecessary verbiage added in order to confuse the listener, such as using a double negative to make a statement mean the opposite of what it would otherwise mean. See also, doublespeak.
"I didn't say I would not do it; I said I wouldn't not do it."

"That's double talk!"
by Downstrike June 05, 2004
deceptive speech designed to mean something that it does not explicitly say
Lay off the double talk already.
by The Return of Light Joker September 15, 2008