"Art stuck on" refers to something that is fixed or attached to a particular surface or object. The antonyms for this phrase would be "free/loose" or "unattached/detached." These words suggest a sense of independence and mobility, indicating that something is not restricted or bound to a particular location. For example, an artwork that is not stuck on a wall can be moved around and displayed in various locations. Similarly, a loose object can be easily moved from one place to another. By using antonyms like "free" and "unattached," we can describe something that is not confined or limited, and is instead adaptable and flexible in its use.