Not Very Enlightening

There are some words that we probably need, but they do not exist.  One that comes to my mind is:  endarkening.  This is the opposite of enlightening.  It means making things much worse in a cosmic sense or, more specifically, leading toward political or national armageddon.  (Since I assume this is MY word, I think I should be entitled to supply MY definition of the word.)  For example, "The extreme partisanship of the current Congress is endarkening."  Usage may evolve further.