The word "pendulates" is a verb that means to swing back and forth like a pendulum. Some possible antonyms for this word could be "stationary," "immobile," "fixed," "stable," or "steady." These words all describe a lack of movement or motion, and the opposite of swinging back and forth. Other antonyms for "pendulates" might include words like "rests," "settles," or "docks," which describe a state of stillness or calmness. Overall, antonyms for "pendulates" emphasize the opposite of its movement and suggest a state of equilibrium or stillness instead.