Seethe : (of a liquid) boil or be turbulent as if boiling.Plumb : measure (the depth of a body of water).Cool : of or at a fairly low temperature.Freeze : (with reference to a liquid) turn or be turned into ice or another solid as a result of extreme cold.Chill : an unpleasant feeling of coldness in the atmosphere, one's surroundings, or the body.Antonym of Seethe is Cool