What does Issy mean?
Issy \i(s)-sy\ as a girls' name (also used as boys' name Issy). Issy's root is Hebrew, and Issy means "God is my oath". Issy is a form of Isabel (Hebrew): Spanish variant of Elizabeth. Seldom used as a name for kids.
Issy has 38 more alternative forms via Isabel: Bel, Belia, Belicia, Belita, Bell▼, Bella▲, Belle▼, Bellita, Chabeli, Chabelita, Ib, Ibbie, Isabeau, Isabela▲, Isabele, Isabelita, Isabell▼, Isabella▲, Isabelle▲, Isbel, Ishbel, Isobel, Isobell, Isobella, Isobelle, Izabel, Izabella▲, Izabelle, Marisabel, Sabella, Sabelle, Ysabeau, Ysabel, Ysabella, Ysobel, Yzabelle, Yzobel and Yzobelle.
Issy is an unusual first name for females. Issy is an unusual surname too for both adults and children. (2000 U.S. Census)
Below is a graphed comparison of the popularity of the girl name Issy and affiliated names. Bell, Bella (#70 the previous year), Belle, Isa, Isabel (#144), Isabela (#717), Isabell, Isabella (#4), Isabelle (#96), Isobel, Izabella (#200) and Izabelle are the prominent related forms of Issy (#unlisted). These girl names were at the peak of their popularity during 1880-1889 and are somewhat less popular today, with the forms Bell, Belle, Isa and Isabell becoming less in vogue. The most fashionable girl names in this list are Bella (#70), Isabel (#144), Isabella (#4), Isabelle (#96) and Izabella (#200), with Bella, Isabel, Isabella and Isabelle undergoing a resurgence in usage. (Top 1000 Birth Names Records, 2014)