According to the New York Times Everyday Dictionary copyright 1982:

pro-ac-tive adj. favoring the first learned: -- inhibition

that is, being inhibited so as to continue doing something the way you've always done it. Of course, that is the opposite of how many use the word. Therefore, the word is really useless. You can only determine the user's meaning from the context or from how the word is used.

WGS