Constraint adjectives are listed in this post. Each word below can often be found in front of the noun constraint in the same sentence. This reference page can help answer the question what are some adjectives commonly used for describing CONSTRAINT.
additional, artificial, binding, bitter, certain, common, corresponding, critical, divine, economic, external, financial
first, following, fundamental, further, general, geometric, great, hard, important, institutional, internal, key
last, least, legal, less, linear, little, main, major, mechanical, moral, more, much
mutual, natural, new, only, other, outward, painful, particular, perpetual, physical, political, possible
powerful, practical, primary, real, same, second, serious, severe, significant, similar, single, slight
social, strong, structural, such, sweet, third, unique, unnatural
Hope this word list had the adjective used with constraint you were looking for. Additional describing words / adjectives that describe / adjectives of various nouns can be found in the other pages on this website.