roiling

(verb) be agitated. Synonyms: churn, boil, moil, roil. Example: "The sea was churning in the storm."

(verb) make turbid by stirring up the sediments of. Synonyms: roil, rile.

(adj) (of a liquid) agitated vigorously; in a state of turbulence. Synonyms: churning, roiled, roily, turbulent. Examples: "The river's roiling current." "Turbulent rapids."