Antonyms for "makes a motion" could include: stillness, immobility, stasis, immovability, inactivity, idleness, and staticness. The word "motion" indicates movement, so antonyms would be the opposite of that concept. Stillness suggests no movement at all, while immobility indicates the inability to move. Stasis implies a lack of change or progress, and immovability suggests an object is resistant to movement or cannot be moved. Inactivity and idleness suggest a state of rest or lack of movement. Staticness refers to something that is stationary or unchanging. All of these words are antonyms for "makes a motion," and can be used to describe situations or objects that lack movement or action.