1. three simple letters that, together, they form a word meaning 'i don't know' in aim lingo. typing 'idk' instead of 'i don't know' is much faster and easier.

2. this word/combination of letters is most commonly found in the same phrase as, "idk, my bff jill?" this phrase is found in those texting commercials.
1. emmy: soo what do you wanna do today?
mary: umm, idk.

2. emmy: who stole my cookies?!
mary: idk, my bff jill
emmy: oh.
by ~lexii~ July 4, 2008
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1) An abbriviation of "I don't know"

2) A term used by all the hip and with-it optometrists in the context of the severely visually impaired
1) "Hey are you gonna be able to go to that thing at that date and time upon which we agreed earlier?"
"Idk... maybe."

2) "Yo Thompson, check out this fool here, he's got some legit idk creepin in."

"Thas wack, brotha."
by Teh K March 2, 2010
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IN TEXT
mom: hey what's the weather like outside?
son: IDK i haven't been outside yet
by December 10, 2020
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Jeff:Do You Want To Go To The Movies?
Bob:idk
by Seagulls Of Satan August 5, 2008
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Insant Messenger acronym:
"I Don`t Know"

Usually used by people who use IM for the same exact 15 minutes every day.

This one is so rare I sometimes gotta stop and think what it means.
FuppleRampays is no longer idle at 3:10
PoposeMadger:hey
FuppleRampays:uhh yo
PoposeMadger:when is 8or`s party?
FuppleRampays:idk
PoposeMadger:what?
PoposeMadger:wtf dude
FuppleRampays:......
FuppleRampays:OMG
FuppleRampays:serious?
PoposeMadger:I DONT KNOW!!
FuppleRampays:...there you go finally
PoposeMadger:wait what....
PoposeMadger:o yeh rite I was just fuckin with you
PoposeMadger:thats all
PoposeMadger:...
FuppleRampays has signed off at 3:25
by tanukisanyo May 20, 2005
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Blonde : What's IDK mean?

Brunette : I don't know.

Blonde : Ug! Nobody knows!
by noʎ ʞɔnɟ November 19, 2009
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