Water sprite is a term used to refer to a variety of mythical aquatic creatures. NIX is a three-letter Germanic water spirit, while UNDINE is a six-letter water NYMPH from German folklore. Nixie is a five-letter water sprite from Germanic mythology, Kelpie is a six-letter shape-shifting water horse from Celtic mythology, NYMPH is a five-letter minor deity of nature from Greek mythology, NAIAD is a five-letter water NYMPH from Greek mythology, and ARIEL is a five-letter airy spirit from Shakespeare's The Tempest.