Moved sinuously can be described in three ways: SNAKED (6 letters), SLITHERED (9 letters), and eeled (5 letters). Snaking is a type of movement that is characterized by a winding, curving motion, similar to the way a snake moves. Slithering is a similar type of movement, but it is more rapid and involves more side-to-side motion. Eeling is a type of movement that is similar to swimming, with a smooth, undulating motion. All three words describe a type of movement that is sinuous and serpentine.