Thirza \th(ir)-za\ as a girl's name is a variant of Tirzah (Hebrew), and the meaning of Thirza is "delight, pleasantness, cypress tree".
The baby name Thirza sounds like Tirza, Thurza, Thirzah and Thirsa. Other similar baby names are Terza, Therma, Thora, Thyra, Tierza, Thursa and Thersa.