Synovial fluid is a vital fluid that lubricates our joints and reduces friction between them. It is a clear and viscous liquid that helps in improving joint movement and reducing pain and inflammation. Synonyms for synovial fluid can include joint fluid, articular fluid, synovium lubricant, synovial joint fluid, and synovia. These synonyms reflect the various aspects of the fluid as it plays a crucial role in aiding joint function and reducing stiffness. Each term adds nuance to the meaning, highlighting the aspects of synovial fluid that the writer wishes to emphasize when discussing joint health or medical conditions involving joints.