The antonyms of the word "more congealed" are liquid, fluid, runny, watery, and liquefied. When a substance is liquid, it is not solidified, and it can easily flow or pour. Fluid refers to substances that do not have a definitive shape and can change according to the container they are in. Runny defines materials that are thin and flow easily. Watery means something that is full of water or has a large amount of water content. Finally, liquefied refers to materials that have been turned into a liquid through mechanical or thermal changes. All these words express the opposite meanings of the word "more congealed," which means to become thicker or more solid.