Heat cramp is a painful muscle spasm caused by exposure to heat, which can lead to dehydration and electrolyte imbalances. The term 'heat cramp' is often associated with hot and humid climates or strenuous physical activity in high temperature environments. Its antonyms are words that signify the opposite symptoms or conditions, such as coolness, comfort, relaxation, and ease. Some of the antonyms of heat cramp include refreshment, quiescence, peace, comfort, serenity, calmness, and relaxation. To counteract heat cramp, it is important to keep the body hydrated and maintain a cool internal temperature by taking frequent breaks in the shade, wearing light clothes, and avoiding extreme physical activity during peak heat hours.