Ailith \a(i)-li-th\ as a girl's name is of Old English origin, and the meaning of Ailith is "seasoned warrior". Ailith has 2 variant forms: Aldith and Eilith. For more information, see also the related name Aldis. Baby names that sound like Ailith are Alita and Eilidh. View a list of the 2 names that reference Ailith.