Meaning & Origin
A unisex given name from Latin. A female given name from Latin Hilaria. A male given name from Latin Hilarius, variant of Hilary.
Hillary is a girl's and boy's baby name of Latin origin, from hilarius meaning 'cheerful' or 'merry.' Saint Hilary of Poitiers was a 4th-century theologian, and the name was historically more common for boys. In modern times, Hillary Clinton — U.S. Secretary of State and the first female major-party presidential nominee — has made this a name associated with groundbreaking achievement.