Top definition
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
Get the mug
Get a iunno mug for your bunkmate Josรฉ.
5
"I dont know", but really fast.
Usually AIM slang.
lkdsf0990 : "what did you do today?"

kjdsfh900: "iunno."
by doodooheadnicole October 08, 2005
Get the mug
Get a iunno mug for your buddy Georges.
6
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
Get the mug
Get a I unno mug for your friend Sarah.
7
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
Get the mug
Get a iunno mug for your papa Vivek.