nisba

noun2

1. •
   An Arabic derivational adjective formed with the suffix ـِيّ m (-iyy) / ـِيَّة f (-iyya), or the equivalent construction in another Semitic (or other Afroasiatic) language.
2. •
   The part of an Arabic name consisting of such an adjective.

   • Knowing the nisbas of the litigants and their representatives was the qāḍī's single most important preliminary task. — 2013