NP-

/NP/ , pref. Extremely. Used to modify adjectives describing a level or
quality of difficulty; the connotation is often more so than it should be.
This is generalized from the computer-science terms NP-hard and NP-complete
; NP-complete problems all seem to be very hard, but so far no one has found
a proof that they are. NP is the set of Nondeterministic-Polynomial
problems, those that can be completed by a nondeterministic Turing machine
in an amount of time that is a polynomial function of the size of the input;
a solution for one NP-complete problem would solve all the others. Coding a
BitBlt implementation to perform correctly in every case is NP-annoying.
Note, however, that strictly speaking this usage is misleading; there are
plenty of easy problems in class NP. NP-complete problems are hard not
because they are in class NP, but because they are the hardest problems in
class NP.