The term "un-coiled" means to unwind or straighten something that was previously curled up or coiled. The antonyms for this term include words like curl, twist, loop, and coil. These words describe actions that involve wrapping or bending things into spirals or curves. For instance, when you coil a rope, you wind it into a tight spiral, while twisting a rubber band involves winding it into a spiral that is twisted in opposite directions. The antonyms of un-coiled are not just about the opposite action, but also suggest a different form or shape to an object.