Isobel \i-so-bel\ as a girl's name is a variant of Elizabeth (Hebrew) and Isabel (Hebrew), and the meaning of Isobel is "God's promise; God is my oath".
The baby name Isobel sounds like Ysobel, Isobell and Isbel. Other similar baby names are Ishbel, Ysabel, Yzobel, Izabel, Isobelle, Isobella, Isabell, Isabele, Isabela and Ysbel.