Nyx is the name of the primordial goddess of the night in Greek mythology, the wife of Erebos (the god of darkness) and mother of their numerous children, including Aether and Hemera, and the Moirai (the three Fates).
Nyx is also a homonym for Nix, a word derived from German nix meaning “nothing” and used as a verb to mean “no, veto”. Nix is also an English, German, and Dutch surname derived from given name Nicholas meaning “victory of the people”; as a German surname it may have originated as a nickname derived from Germanic nix, as in the water spirit. In Germanic folklore, a nix is the male counterpart to nixies, water spirits who can change shape.
Nix is also a Latin word meaning “snow”