Meaning and name origin
Hildy \hi(l)-dy\ as a girl's name is of Old German origin, and the meaning of Hildy is "ready for battle; battle woman". Hildy is a variant of Brunhilda (Old German): heroine of the Siegfried legend made popular by the Ring cycle of operas by Richard Wagner. Also a variant of Hilda (Old German): saint Hilda (seventh century) was a much-esteemed abbess of her time in England.
Hildy is not a popular first name for females and an equally uncommon surname or last name for all people (2000 U.S. Census).
Displayed below is a comparison of the popularity of the girl name Hildy and its variant forms. The only popular variation form ranked in the Top 1000/100 is Hilda. (2014 statistics).