mushroomy adjective3 •Characteristic of mushrooms.Dried mushrooms are really mushroomier than the canned and very simple to use; they are used a great deal in Chinese and Italian cooking. — 1957 •Flavoured with mushrooms.The scallops are pounded and watchfully cooked to maximize their callow tenderness, which is further italicized by the mushroomiest sauce on the block, glowing with fine Marsala wine. — 1995 •Resembling a mushroom. formsmushroomier · mushroomiest