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.
The Merriam Webster's dictionary definition of self-confidence is: Confidence in oneself and in one's powers and abilities.. Since that definition has the word confidence within it, we should also look that up also to gain a better understanding.