Relative adjectives are generally formed by adding ِيٌّ to the end of a noun:
دِمَشْقَ
-
دِمَشْقِيٌّ
(Damascus - Damascene/from Damascus)
Diacritic signs may be added, omitted, or changed within the noun. Nouns with ة at the end will drop it in the relative adjective:
مَكَّةُ
-
مَكِّيٌّ
(Mecca - Meccan/from Mecca)
For feminine nouns that end in اء, the ء will change to و in the relative adjective:
صَحْراءُ -
صَحْراوِيٌّ
(desert - related to the desert)
For masculine nouns that end in اء, the ء may or may not change, and both forms are correct:
بِناءٌ -
بِنائيٌّ
(building - related to buildings)
See also: