The term 'Sprite Water' is composed of four crossword solutions: NIX (3 letters), NIXIE (5 letters), KELPIE (6 letters), and ARIEL (5 letters). NIX is a verb meaning to veto or reject, while NIXIE is a mythical water sprite. KELPIE is another type of water spirit, originating in Celtic folklore, and ARIEL is a character from Shakespeare's play The Tempest, who is a spirit of the air. Together, these four words form the term 'Sprite Water, ' which can be used to refer to a body of water inhabited by mythical creatures.