An abbreviation that is widely used in texting and chat, and on Facebook, Instagram and elsewhere on the internet, but what does IDK mean in slang?
Most Common IDK Meaning
IDK stands for I Don’t Know.
IDK is used to express that you don’t know or understand something.
idk why I came home, I should have stayed out.
Alternative IDK Meanings
What Does IDK Mean?
I Don’t Know.