Adda is a female name.
The name Adda as a form of Ada is a Hebrew name, but as well a short version of names beginning with “Adal-/Adel-“, e.g. Adelaide.
Adda is a palindrome name, it can be spelled the same way forward or backward.
Adda means “adornment” (from Hebrew “adah”) and “of noble kind/sort/type” (from Germanic “adal” = noble + “heit” = kind/sort/type).