Of Greek origin.
A feminine and masculine name.
From the Greek word “ἱλαρός” (hilarós), which was the source of the Latin word “hilaris”.
It means “cheerful”, “happy”.
Other forms of the feminine name are Hillary, Hilaria, Ilaria, Hilaire, Hilery, Hilarie.
Famous female bearers are Hilary Swank, Hilary Duff, Hilary Hahn, Hilar Armstrong, Hilary Knight.
Famous male bearers are Hilary Putnam, Hilary Minster, Hilary Davan Wetton.