"Variant of Felisa"
The name Felissa is commonly a female name from the "Latin" origin.
Felissa is a spelling variant of Felisa, the Spanish and Portuguese form of Felicia. Felicia goes back to the Latin adjective felix, meaning happy or fortunate, and Felisa is the form the name takes in Spanish. The doubled s in Felissa reflects an English spelling of that same name rather than a separate root.
Felisa means "Happy. Feminine of Felix.".
The pronunciation of Felissa is fuh-LISS-uh.