1 definition by Maddie0020

To kill an otherwise good conversation with an abnormally stupid or unecessary comment that is not in any way relavent to the conversation.

(May be used as an adjective, ei; to be dephonicated by killing the conversation)
"OMG dave get out of here, you are so dephonicated!"
"OMG DAVE you just completely dephonicated our conversation!!!"
by Maddie0020 January 10, 2008
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