"Blend of Ari and Bella"
The name Aribella is commonly a female name from the "American" origin.
Aribella is a modern American formation that reads as a blend of the name elements Ari and Bella, both of which appear in many US girls' names recorded in the same period. It first appears in US birth records in 2004, which fits a recent coinage rather than an inherited name, and it is not attested in older naming traditions.
The pronunciation of Aribella is ah-ree-BELL-uh.