devoir

Devoir is masculine. While it does derive from Latin "debere" (to owe), the gender explanation is imprecise. In French, "devoir" functions as both a noun (meaning "duty" or "homework") and a verb. As a noun, it is masculine, likely influenced by the Latin neuter form "debitum" (that which is owed), which often became masculine in French. However, the connection to second conjugation patterns is not the primary mechanism determining its gender. French grammatical gender for nouns derived from Latin is complex and does not follow predictable conjugation-based rules; this word's masculine gender is best treated as an inherited lexical property rather than derived from systematic conjugation patterns.