Cythraul

It is likely to be an early Christian borrowing from Ecclesiastical Latin, like numerous other words in the Welsh and Irish languages.

Cythraul has been identified as a 'spirit of Chaos' by some modern Druids, an interpretation which dates back to Iolo Morganwg's Barddas.

According to this view, "Cythraul" may be used to designate the same condition of primordial chaos or limitlesness which appears in, for example, Plato's Timaeus at 30A or Genesis 1.

The Cythraul is the name of a character in the MMORPG video game, World of Warcraft produced by Blizzard Entertainment.

A creature named the Cythraul appears as one of the three Apocalypse Kings in the Skulduggery Pleasant fantasy novels by Irish author Derek Landy.

An Angler fish is referred to as "Cythraul of the seas" in Modern Welsh