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4.
To have not done something; an abbreviation of "I had not", coming from the abbreviations "I had" (I'd) and "had not" (hadn't).
Pete - "I think you should study chapter 12 for your Humanities exam."
Rachel - "Good idea, I'dn't thought about that chapter."
by Pete McDonald February 24, 2003

Words related to Idn't

hillbilly slang south southern texas
 
1.
Texan or Southern slang for "isn't it".
Bob: Kinda windy, idn't?
Earl: Yup. Perty windy.
by Max... SleepyMax March 14, 2008
 
2.
Acronym for "I Don't Need This Shit"
I'm so sick of these common app supplements... IDNTS
by matzohbawl November 15, 2010
 
3.
Contraction of I would not or I should not.
I'd (I would/should) + n't (not)
I'dn't want that here.
I'dn't be there.
by Nobe Awdy July 22, 2009
 
5.
Internet acronym for "I DO NOT THINK SO"

Mark is right all the time? IDNTS!
by I am Indy September 27, 2007
 
6.
Acronym for "I Don't Need This"
When Vince continued to stalk Lily, she blocked his call and said, "IDNT."
by amil21 October 23, 2009