iohno 

mushed together pronunciation of "i don't know."

Where is my money? Iohno.

iohno by uswoomon June 10, 2003

iohno 

It's like short for I dont know.

Shane: where's J?
Tim: Iohno.

iohno by nonuttin February 5, 2009

iowno

lazy shorthand for "i don't know"

"hey amber, you gonna take a shot with me?"
"iowno!"

iowno by ilikegreeneyeballs March 18, 2008

iono 

shortened version of "i dunno", which is a shortend version of "i dont know", which is a shortend version of "i do not know"

Iono where your pencil is, find it yourself!

iono by karate December 7, 2003

ioeno

I dont even know

Ioeno what I'm going to eat tonight..

ioeno by cocochanelle December 6, 2010

ionno 

Slang for "I don't know"

Ionno what that biach is talking about.

ionno by ookiemonster April 20, 2003

iono 

Basically the same thing as iunno, it is a quickened version of "I do not know", used in both chatting and in informal speech.

It's history may trace back to Homer Simpson, who often makes a sound that is in between "iono" and "iunno". (Says a lot about his intelligence, doesn't it?)

PersonMan: So, whatchu up to tonight?
TriangleMan: iono. How bout j00?
PersonMan: iono.
TriangleMan: das coo.

iono by Mallio November 19, 2003