Rule 4: The final weak radical of an active participle undergoes a special change or elision under certain case and indefiniteness conditions. A weak-final participle does not always resemble an unchanged فَاعِلٌ pattern.
دَاعٍ — a caller, from د ع و.
رَامٍ — a thrower, from ر م ي.
These are indefinite nominative or genitive forms. The indefinite accusative is دَاعِيًا and رَامِيًا, which shows that the yāʾ is not deleted in every case.
Opening interactive controls...
Rule 4: The Defective Active Participle
Defective Verbs: Six Iʿlāl Rules and Four Short Paradigms
Rule 4: The final weak radical of an active participle undergoes a special change or elision under certain case and indefiniteness conditions. A weak-final participle does not always resemble an unchanged فَاعِلٌ pattern.
دَاعٍ — a caller, from د ع و.
رَامٍ — a thrower, from ر م ي.
These are indefinite nominative or genitive forms. The indefinite accusative is دَاعِيًا and رَامِيًا, which shows that the yāʾ is not deleted in every case.