WordNet 3.0
Adjective (1)
- (of a liquid) agitated vigorously; in a state of turbulence“the river's roiling current”“turbulent rapids”Synonyms: churningroilingroiledturbulent
Webster's Dictionary (GCIDE)
Roily \Roil"y\, a. Turbid; as, roily water. [1913 Webster]