Sanguine fluid is often referred to as blood and is an essential component of the human body. It is a red liquid that circulates through the veins and arteries, carrying oxygen and nutrients to the organs and tissues. However, there are many synonyms for sanguine fluid that convey different meanings. For instance, it can be referred to as lifeblood, which indicates its importance in sustaining life. Other synonyms include claret, crimson, and ruby, which all pertain to the color of the fluid. Additionally, expressions like vital fluid, circulatory fluid, and the red stuff all suggest the significance of blood in maintaining good health and vitality.