used for text message/aim for the phrase "i dont know".
person a: "do u like mike?"

person b: "iono"
by sc12een17am3 July 20, 2005
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Iono what yer talkin' 'bout.
by Sami January 25, 2004
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The slurred version of the phrase: I don't know.
Jim: Hey, fag, wake up! I need to know where you put my makeup.
Besty: Iono.
by Justine February 2, 2004
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what people who are too thick to type 'i don't know' use
by SEX IS FUN!!!!!! February 4, 2004
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A lazy mispelling of "I dunno," derived from "I don't know."
Person 1: Hey, where can I DL some warez?
Person 2: iono
Person 1: WTF?!
by Eric Shi February 7, 2004
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"what do you wanna do tonight?"
"iono."
by elaine February 1, 2004
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