Gwennetta \gwe(n)-netta, gwenn(et)-ta\ as a girl's name is a variant of Gwyneth (Welsh), and the meaning of Gwennetta is "happiness".
The baby name Gwennetta sounds like Gwenetta, Gwenette and Gwenneth. Other similar baby names are Glennette, Grenatta, Gwennora, Gwennola, Gwenna, Gwinneth, Gwenness, Gwenita, Gweneth and Kennette.