The word "de-corticate" means to remove the outer layers of something. Its antonym would then be "en-corticate," which means to cover or add layers. Another antonym could be "intact," meaning to keep the outer layers or structure intact. "Covered," "clothed," or "wrapped" could also serve as antonyms, as they all indicate the presence of layers or protection for the surface of the object. Additionally, "preserve" is an antonym for "de-corticate," as it implies the act of keeping the outer layers of something intact and protected from damage or removal.