Viscosity adjectives are listed in this post. Each word below can often be found in front of the noun viscosity in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing VISCOSITY.
absolute, apparent, constant, different
dynamic, effective, fluid, greater
high, higher, kinematic, liquid
low, lower, minimum, relative
same, shear, solvent
Hope this word list had the adjective used with viscosity you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.