Iuhno 

To be unsure of something, derived from the specific phrase "i, uh, dunno," which is derived from "i don't know." Not to be confused with the more-confident-yet-still-somewhat uncertain "iunno"

A.K.A. That one person that has the patience of a hungry cat when it comes to typing out the entirety of the simple phrase "I don't know"

A.A.K.A. What this guy could probably be saying --> ¯\_(ツ)_/¯

"Well, the thing is...iuhno if she's for real or not."

"Iuhno if this is such a good idea, dude."

Iuhno by TacoPBJ October 7, 2016

iunno 

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."

iunno by Kavkid June 11, 2006

Iuno 

Iuno is I don't Know, but One word :)

23:33 <Donkie747> What you guys doing
23:34 <Dash`> rofl
23:35 <Donkie747> rofl?
23:36 * Q sets mode: +o Gen|Work
23:36 <Dash`> iuno

Iuno by Ash October 13, 2004

Iunoh 

Shorthand version of the phrase, "I don't know." Best read imagining the author shrugging the shoulders and mumbling "iunoh"

Guy1: "what are we doin' tonight?"
Guy2: "iunoh, but imuna get smashed"

Iunoh by NoUse4AName July 11, 2007

iuno 

Onomatopoetic for "I don't know"

Person 1: What should we eat tonight?
Person 2: Iuno, whatever you want bae.

iuno by Stephen4241 September 3, 2016

Shiii’iunno 

Southern talk meaning: Shit, I don’t know.

Bob-Jim: Hey Jim-Bob, who clogged da shitta?

Jim-Bob: Shiii’iunno, Bob-Jim!

Shiii’iunno by jomama217 August 24, 2011

iunno 

another way of saying "i don't know"
often used in online chatting

iunno by frank meng July 18, 2003