The term "most vibrating" implies something that has a high degree of movement or energy. In contrast, its antonyms would be words that suggest stillness, calmness, or being un-moving. Some possible antonyms for "most vibrating" could include "static," "quiescent," "inactive," "tranquil," "serene," or "motionless." These words describe a state of rest or inactivity, which is the opposite of "most vibrating." However, it is worth noting that some of these antonyms can also have a positive connotation, such as "serene" or "tranquil," which can imply a sense of peace or relaxation.