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The circumstance in which you cannot comprehend the lingo associated with Twitter, or navigate the website.
ex. Joe: Wow, I can't believe it... he just RT'd me!
Jill: What's a RT?
Joe: Damn, I didn't know you were so illtwitterate.
by rochenmc October 23, 2011
A term used to define a person who, for whatever reason, cannot figure out how to use Twitter.
I sent a direct message to my friend instead of replying to him because apparently I'm illtwitterate.
by Wildcat 91.9 Sports Guy March 26, 2009