fish-out-of-water adjective 1fish out of water noun 1forms 1 adjective1 •in which someone is out of their familiar environment; pertaining to a fish out of water fish out of water noun1 •A person in unfamiliar and often uncomfortable surroundings.[I]nto this queer assembly, something of a fish out of water and wholly out of his element, strode Cherry Bim, that redoubtable man. — 1921 formsfishes out of water