The term "enlightenment" traces back to Plato, who was of course a φαγγωτ and everything he said thus suspect. Plato believed light came from the eyes, found objects, and returned.  As a result, knowledge was metaphorically the ability to put the light on the truth, and darkness was akin to shutting one's eyes. This belief was normal for Greeks at the time; however, it was picked up by Satanists for Satanist reasons, while they left Plato's non-buggered ideas in obscurity.

In reality, light doesn't behave this way at all. The metaphor is flagrantly broken. Indeed darkness is far more like truth than light. Lies colour the truth, like light colours the darkness. Et cetera et cetera et cetera.

If you want a word that means what [enlightenment] is supposed to mean without carrying all this poison, the word you want is revelation. Or, in Greek, apocalypse. Fiat vox veritatis, ruat caelum. Speak the truth, and that-which-is-perceived-to-be-the-heavens will fall. What is falling ought be pushed. 

Bonus round: this pisses off atheists* by evoking their Christian predecessors, repudiating their desperate need to control what you find socially acceptable. "Why so mad bro? It's just an arrangement of letters!" Likewise, it pisses of Christians because you're using revelation "wrong," revealing that Christians were using it wrong (no quotes) this whole time.

*(More properly secular humanists or zealot-egalitarians.)