Gender / Sex: boy (Hilliary's also a girl name)
Meaning: cheerful, happy
Sounds Like: Hillary, Hillery, Hillier
Similar Names: Hilliard, Hillard, Hillierd
Hilliary \hi-llia-ry\ as a boy's name (also used as girl's name Hilliary), is a variant of Hilary (Latin), and the meaning of Hilliary is "cheerful, happy".
The baby name Hilliary sounds like Hillary, Hillery and Hillier. Other similar baby names are Hilliard, Hillard and Hillierd.
Hilliary is not a popular first name for men and an equally uncommon surname or last name for both men and women. (1990 U.S. Census)