Joannue \jo(an)-nue\ as a girl's name is a variant of Joan (Hebrew), and the meaning of Joannue is "God is gracious".
The baby name Joannue sounds like Joanne, Joanna, Janne, Jannie, Jannae, Jeanne, Jeannie, Joanie, Joane, Joeanne, Joann, Jonnie, Jonnae, Johnnie, Johnnae and Joyanne. Other similar baby names are Jovanne, Josanne, Johanne, Jolanne and Roanne.