Meaning and Name Origin
Izzy \i(z)-zy\ as a girls' name (also used as boys' name Izzy). Izzy means "God is my oath". Izzy is a derivative of Isabel (Hebrew): Spanish variant of Elizabeth. Seldom used as a name for baby girls.
Izzy 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.
Izzy is an unusual first name for females. Izzy is an equally unusual last name for both adults and children. (2000 U.S. Census)
Displayed below is a comparison of the usage of the girl name Izzy and related names. Popular related forms of Izzy (#unlisted) ranked in the Top 1000 are Isabella (#4 in 2014), Bella (#70), Isabelle (#96), Isabel (#144), Izabella (#200), Isabela (#717), Belle, Izabelle, Isobel, Isa, Bell and Isabell. Adoption of these girl names was at its highest during the years 1880-1889 and is somewhat lower today, with the forms Isabell, Isa, Belle and Bell becoming less stylish. The most fashionable birth names in this compilation are Isabelle (#96), Isabella (#4), Bella (#70), Isabel (#144) and Izabella (#200), with Bella, Isabel, Isabella and Isabelle going through a rebound in usage. (2014 Birth Statistics)