noun

• The unordered state of matter in classical accounts of cosmogony.
• Any state of disorder; a confused or amorphous mixture or conglomeration.
• (mathematics) A behaviour of iterative non-linear systems in which arbitrarily small variations in initial conditions become magnified over time.
• (fantasy) One of the two metaphysical forces of the world in some fantasy settings, as opposed to law.
• (obsolete) A vast chasm or abyss.
• (obsolete, rare) A given medium; a space in which something exists or lives; an environment.
• (Greek mythology) In Greek mythology, the primordial state of disorder that exists before the creation of the world, or the first being or deity to exist.
• (astronomy) A planetoid and cubewano orbiting in the Kuiper belt.
• (fantasy, science fiction) In the Warhammer franchise, a demonic antagonist that sends demons, monsters, warriors, and beasts to wage war on the games' setting.
• Initialism of congenital high airway obstruction syndrome.
• (slang) Initialism of can't have anyone over syndrome.