Hildi \hi(l)-di\ as a girl's name is a variant of Brunhilda (Old German), and the meaning of Hildi is "ready for battle".
The baby name Hildi sounds like Hildy, Hildie, Hilde and Hilda. Other similar baby names are Heidi, Nilda, Gilda, Goldi, Hali, Hilly, Halli, Hedi, Heddi, Hylda, Hille, Hilma, Hinda, Holda, Hulda, Holde, Holli, Huldie, Tildy, Tildie, Tilde, Tilda and Wilda.