Lake turnover occurs when the layers of water with noted temperature differences begin to mix together and the water and debris that has been sitting at the bottom of the lake begins to mix with the layers of water above it.
Definition of cautious. : careful about avoiding danger or risk cautious investors cautious optimism.
Synonym Discussion of circumspect cautious, circumspect, wary, chary mean prudently watchful and discreet in the face of danger or risk. cautious implies the exercise of forethought usually prompted by fear of danger. a cautious driver; circumspect suggests less fear and stresses the surveying of all possible consequences before acting or deciding. circumspect in his business dealings wary emphasizes suspiciousness and alertness in watching for danger and cunning in escaping it.