Arlie
Gaelic
Oath
Arlie is most likely a diminutive of Arlene. Arlene possibly originates in Gaelic languages and means "oath". It has been fairly popular as a feminine given name in the English-speaking coutries. Some sources suggest, though, that its origin and meaning are unknown, or they might be associated with names such as Marlene, Charlene.
No more information.