Top Definition
The essesnce of being in an AP(advanced placement) class. It pretty much means your smart, inteligent, and witty. If you have have a lots of AP-ness, you could be considered a nerd.
girl: Im the one with AP-ness in this relationship
girl: I'm in AP classes, your not.
by viky2013 January 10, 2010
say it out loud 3 times and you shall understand the meaning.
Student: Hey teacher, could you use this word in a sentence? (hands the teacher a piece of paper)

Teacher: "Everywhere i go, i see AP-ness"
by Cdplayer6 May 26, 2009
the feeling of false confidence that comes from taking AP courses in high school
I'm going to do great on the AP Chem exam. I have APness.
by Jeff8758 July 31, 2011

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