Allysa \a-lly-sa\ as a girl's name is a variant of Alicia (Old German) and Alisa (Hebrew), and the meaning of Allysa is "noble, exalted; great happiness".
The baby name Allysa sounds like Alysa, Allyssa, Allysia, Allyse, Allys, Allysah and Allisa. Other similar baby names are Allyna and Allyda.