Is Hillary a Word?

Hilary, Hilarie or Hillary is a given and family name, derived from the Latin hilarius meaning "cheerful", from hilaris, "cheerful, merry", which comes from the Greek ἱλαρός (hilaros), "cheerful, merry", which in turn comes from ἵλαος (hilaos), "propitious, gracious".

Is Hillary a noun?

Proper noun

A female given name from Latin ultimately derived from the Latin Hilaria. A male given name from Latin ultimately derived from the Latin Hilarius; a variant of Hilary.

Is Hilary the most poisoned baby name?

So, I can confidently say that, defining “poisoning” as the relative loss of popularity in a single year and controlling for fad names, “Hilary” is absolutely the most poisoned woman's name in recorded history in the US.