fake, false, borrow

叚 is a pictograph depicting two hands grasping a cliff wall, conveying the idea of relying on the strength of the rocks to climb upward, meaning to borrow or depend on. Rocks on a cliff wall are prone to falling, extending to the sense of unreliability, so 叚 also means untrue or false. Nowadays, 叚 is no longer used independently and only serves as a component in other characters, with its meanings taken over by 假.