Mundane meaning : An unremarkable, ordinary human being. (in various subcultures) A person considered to be "normal", part of the mainstream culture, outside the subculture, not part of the elite group. The world outside fandom; the normal, mainstream world. (satanism) A person not a Satanist. Worldly, earthly, profane, vulgar as opposed to heavenly. Pertaining to the Universe, cosmos or physical reality, as opposed to the spiritual world. Ordinary; not new. Tedious; repetitive and boring.