Addesyn is a feminine name with American English pronunciation, pronounced as uh-DEH-sin (/əˈdɛsɪn/). It is a variation of the name Addison. The name Addesyn has been given to a small number of newborn girls in the United States, with occurrences in recent years ranging from 5 to 7. While not among the most popular names, Addesyn carries a modern and unique sound that may appeal to parents looking for a distinctive choice for their baby girl.