An archaic or obsolete term for a person who commits adultery; an adulterer.
From Old French adulter, from Latin adulterare, meaning 'to corrupt' or 'to commit adultery.' The word has been largely replaced by the modern 'adulterer.'
The word adulter is so old that it's mostly disappeared, but its root 'adulterare' spawned modern words like adulterate (to make impure) and adultery—showing how one Latin root branch into different meanings.
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