In Abstract nouns^x, Negatives^x

Wow, the questions are getting very precise early in the game now. It is an abstract noun with negative associations. It's not a profession, but your profession can cause it!

There is no rule. Words with these prefixes have come about through accidents of history. The most usual is "un-", but always consult a dictionary. The following does not really answer your question, but you may find it somewhat useful anyway, especially if you're willing to work to dig some of...