Decorticate is a term often used in medical settings to describe a type of brain injury or abnormality that affects the body's movements. It refers to the stiffening and flexing of the arms and legs, typically towards the body's center. The opposite of decorticate posturing is decerebrate posturing, which involves extension and rigidity of the limbs away from the body. However, in everyday language, we may consider antonyms for decorticate to be words such as "relaxing," "limbering up," and "unwinding." These words imply a sense of ease, flexibility, and fluidity, which stands in contrast to the rigid, involuntary movements associated with decorticate posturing.