Runniness is a term that refers to the consistency of a liquid that flows easily. When describing food, runniness is often used to refer to a dish that has too much liquid or is undercooked. There are various synonyms for runniness that are frequently used in cooking and food preparation. Some common synonyms include liquidness, dilution, thinness, and fluidity. Other terms that are used to describe this consistency include liquidity, watery texture, and softness. No matter which term is used to describe runniness, all of them refer to a liquid-like consistency that is not thick or viscous.