Uncongealed is an adjective that refers to something that has not solidified or become firm, usually in reference to a liquid or gel-like substance. Some antonyms for uncongealed include solidified, coagulated, hardened, congealed, clotting, or thickening. These words signify the opposite of uncongealed as they refer to a substance that has become more fixed or solid due to cooling, settling, or other factors. For example, milk that has been left out in the open can become solidified or coagulated. Similarly, pudding can become hardened or congealed if left in the fridge for a long period.