* "Incubo" - meaning "to lie upon" or "to brood over". This refers to the original concept of the incubus as a male demon who would lie upon sleeping women, often causing nightmares and even pregnancies.
* "Incubus" - This word entered English directly from Latin during the Middle Ages, and the concept of the incubus demon became a part of folklore and mythology.
Important to note: The concept of the incubus demon is deeply rooted in folklore and superstition, and its origin is likely tied to early attempts to explain unexplained events, such as nightmares, strange pregnancies, and other mysterious occurrences.