"Blend of Donna and isha"
The name Donnisha is commonly a female name from the "American" origin.
Donnisha is a modern American coinage that first appears in United States birth records in 1975. Its form matches a set of twentieth-century American names built on the ending -isha, as in Tanisha, Kenisha and Latisha, with the opening Don- most likely taken from Donna. No earlier use in a documented language or naming tradition is recorded.
The pronunciation of Donnisha is dah-NEE-shuh.