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word invented by Jae of DAY6
‘ierno’ means ‘I don’t know

a sibling of ‘ionno’ and ‘donno’
‘eyo Jae, do you know me?’
‘ uhh.. ierno.. clown, maybe?
ierno by shidaiurs May 25, 2021
Related Words
iurno iunno Iuno iuraoka ierno IRNO irunosexual Iuhno Iunoh Iunoo
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 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
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
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 

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

Jim-Bob: Shiii’iunno, Bob-Jim!
Shiii’iunno by jomama217 August 24, 2011