Sensory nerve endings are specialized structures in the body that detect various sensations, such as touch, pressure, heat, cold, and pain. Antonyms of sensory nerve endings are not applicable as they represent an anatomical and physiological structure. However, the opposite of the sensory system is the motor system, which controls the movement and coordination of muscles. Additionally, the antonyms of sensations that sensory nerve endings detect can be classified as (cold, hot), (light, dark), (hard, soft), (quiet, loud), and (pleasant, unpleasant). Each of these antonyms represents different sensory experiences that are detected by sensory nerve endings in the body.