Abbi

Abbi could be a nickname for Abigaia, Abilene, Abital, Abia, Abijah, Amabel, Amabilia, Anabel, Anabela, Anabella, Anabelle, Annabel, Annabella, Annabelle, Annabeth, Arabella, Babette, Barbara, Bathsheba, Christabel, Christabella, Christabelle, Elisabeth, Elizabeth, Elsabeth, Fabia, Fabiana, Fabiola, Fabricia, Gabriella, Gabrielle, Isabeau, Isabel, Isabela, Isabell, Isabella, Isabelle, Izabel, Izabella, Izabelle, Mabel, Mabella, Mabelle, Mariabella, Mehetabel, Mehitabel, Mirabella, Mirabelle, Rosabel, Rosabella, Rosabelle, Sabina, Sabrina, Sabryna, Tabatha, Tabitha and Ysabel.

Abbi is also used as a masculine name in English, as a diminutive of Abraham, Abram, Albert, Abel, etc. However, it's more common for females. So, I think that the "Gender" of this name should be updated from "Feminine" to "Feminine & Masculine".

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Source: https://en.m.wikipedia.org/wiki/Abby