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It is derived from: "I do not know"
It was changed to: "I don't know"
Then: "I Dunno"
Finally: "Iunno"
"When did that happen!?"
"Uh.... Iunno."
by Kavkid June 02, 2006
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Jul 24 Word of the Day
It’s an acronym standing for Can’t Remember A Fucking Thing. It’s usually used to describe embarrassment at being unable to remember someone (CRAFT moment); going onstage as the lead in the latest theatrical performance and your mind goes completely blank (CRAFT situation); the next morning after a night when you got pissed as a fart and woke up in bed cuddling a traffic cone and a string of fairy lights wound round your prick.
“Where did you go after we left the pub?”
“Dunno, CRAFT.”
by AKACroatalin November 07, 2015
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Conjuntion of "I" and "dunno".
"Where'd all the pie go?!"
"umm... I'unno... "
by Nibs07 November 30, 2006
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"I dont know", but really fast.
Usually AIM slang.
lkdsf0990 : "what did you do today?"

kjdsfh900: "iunno."
by doodooheadnicole October 08, 2005
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A phrase most frequently used over the internet. This is a polite way of saying " I don't wanna do what you wanna do , so fuck off . "
" Dude, wanna come over? "

" I unno man "

" .. "
by deanispenis November 10, 2009
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