Muscular spasms refer to the involuntary contractions of muscles, which can be very painful and uncomfortable. The opposite of muscular spasms is muscle relaxation, which refers to the state of muscles being fully at rest and free of tension. The act of tense and relax, also known as isotonic exercise or stretching, is a great way to prevent muscular spasms. Other antonyms of muscular spasms include ease, comfort, flexibility, and suppleness. With proper nutrition, adequate hydration, and regular exercise, muscular spasms can be prevented, and the body can remain in a state of relaxation and flexibility, ensuring optimal health and well-being.