Validity adjectives are listed in this post. Each word below can often be found in front of the noun validity in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing VALIDITY.
absolute, actual, apparent, basic, certain, clinical, complete, concurrent, consequential, constitutional, construct, content, continued, convergent, criterion
cultural, diagnostic, discriminant, divergent, doubtful, dubious, ecological, empirical, entire, equal, essential, eternal, ethical, exclusive, external
face, factorial, final, formal, full, further, general, good, greater, high, higher, highest, historical, incremental, independent
internal, intrinsic, legal, less, limited, little, logical, low, moral, more, much, necessary, normative, objective, original
other, overall, own, permanent, perpetual, poor, possible, potential, practical, predictive, questionable, real, related, relative, same
scientific, social, spiritual, statistical, subjective, such, sufficient, test, theoretical, ultimate, unconditional, universal, very
Hope this word list had the adjective used with validity you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.