serous

This term is strictly technical and confined to medical or biological settings. It describes a specific quality of bodily fluid that is clear, pale yellow, and watery, lacking the redness of blood or the thickness of pus. Using this word in a casual conversation would seem inappropriately clinical. It carries a neutral, descriptive connotation. While "watery" is a general term, "serous" signals a precise physiological state, often indicating a stage of healing or a specific type of inflammation where serum leaks from capillaries into tissues or cavities.