Agliophobia  - While web searching for background information about words that included: Hades, Succubus, and abject, the footnotes in the definition for the word abject in one online dictionary included a list of phobias. One of the phobias was agliophobia, meaning an abnormal fear of pain. The very existence of such a word is a curiosity, since the absence of a fear of pain seems like it would be quite abnormal.