The term 'move sinuously' can be described by three different words: SLITHER (7 letters), SLINK (5 letters), and SNAKE (5 letters). SLITHER is an action that involves moving in a smooth, winding motion, while SLINK is a verb meaning to move in a sly or stealthy manner. SNAKE is also a verb, which describes the act of moving in a winding or curving path. All three words describe a type of movement that is sinuous, or characterized by curves and bends.