Runny/ˈrʌni/ Definition 1 of 2Pro Tip 1/3Texture Related Use 'runny' to describe foods or substances with a thin consistency that pours easily. The sauce is too runny; it should be thicker. Pro Tip 2/3Undercooked Foods 'Runny' often implies that something, like eggs, isn't fully cooked or solid. I don't like my omelette runny; I prefer it well-done. Pro Tip 3/3Expressions of Preference Some people prefer runny textures, especially in certain dishes, while others do not. She likes her jam runny, but I prefer it to hold its shape.