Allysoun \a-lly-soun\ as a girl's name is a variant of Alison (Old German), and the meaning of Allysoun is "noble, exalted".
The baby name Allysoun sounds like Allyson, Alysoun and Allisoun. Other similar baby names are Alyson, Allysson, Allsun, Allisun, Allison, Allysann and Alisoun.