The term 'move turbulently' can be summarized by the crossword solution 'ROIL, ' which is a four-letter word meaning to move in an agitated or turbulent manner. Roiling is often used to describe the movement of water, such as when a river is roiling with rapids or when the sea is roiling with waves. It can also be used to describe the movement of air, such as when a storm is roiling with thunder and lightning.