Williss \wi-lli-ss\ as a boy's name is a variant of Willis (Old English). See for meaning of Williss.

The baby name Williss sounds like Willess, Elliss, Wallis, Wills and Willes. Other similar baby names are Gilliss, Gillis, Gillies, Holliss, Willkes, Willets, William, Willie, Williams and Willi.