mouselike s of something having a drab pale brown color resembling a mouse Usage(s) In pre-Nazi Norway a steamer ploughed for a quarter of an hour through shoals of mouselike lemmings swimming out to sea via the Trondheim Fjord. Unrelated to the rodent family and far from mouselike in its habits, the shrew is properly an insect eater. Curiously enough, the exemplary, mouselike little Chung-ling Soong turned out to have been getting letters and reading newspapers to some purpose. Synonym(s) mousy mousey mouse-colored