Gwineth \g-wineth, gwi-ne-th\ as a girl's name is a variant of Gwyneth (Welsh), and the meaning of Gwineth is "happiness".

The baby name Gwineth sounds like Gwinyth, Gwinneth and Gweneth. Other similar baby names are Gwenith, Gwenyth, Gwynneth, Gwynith and Gwenneth.