Originally Posted by BlueAngel
cacodemon (or cacodaemon) is an evil spirit or (in the modern sense of the word) a demon. The opposite of a cacodemon is an agathodaemon or eudaemon, a good spirit or angel. The word cacodemon comes through Latin from the Ancient Greek κακοδαίμων (kakodaimōn) meaning an evil spirit, whereas daimon would be a neutral spirit in Greek and Tychodaimon would be a good spirit. In psychology, cacodemonia (or cacodemomania) is a form of insanity in which the patient believes that they are possessed by an evil spirit. The first known occurrence of the word cacodemon dates to 1398. In Shakespeare's Richard III Act 1 Scene 3.Queen Margaret calls Richard a "cacodemon" for his foul deeds and manipulations.
Look at that misspelling.
I am glad that you acknowledge your foibles. κακοδαίμων does not mean an evil spirit. κακοδαίμων is the plural accusative masculine and means 'evil demons'. Kakodeamonos is the correct transliteration for the nominative masculine singular, and the same holds true for the Latin.
You really should invest in a decent lexicon.