Sway
Definition 1 of 4
Pro Tip 1/2
Physical movement
Use 'sway' to describe objects or people moving rhythmically side to side. The dancer's hips swayed to the beat.
Pro Tip 2/2
Steady motion
'Sway' indicates a movement that's often gentle and steady rather than abrupt and fast. The hammock swayed gently in the breeze.