15th cent. From Latin idea 'id.,' from Greek ἰδέα (idéa) "appearance," "form."
From Proto-Indo-European *u̯ei̯d- "to see," "to know." See also ver.
Romance: Western Vulgar Latin: Asturian idea, Portuguese ideia, Catalan idea, French idée, Italian idea ; Eastern Vulgar Latin: Romanian idee