idiomatique, adj., idiomatic.
idiome, n.m., idiom, dialect, language.
idiopathie, n.f., (med.) idiopathy; (philos.) inclination.
idiopathique, adj., idiopathic.
idiosyncrasie, n.f., idiosyncrasy.
idiot, -e, n.m.f. and adj., idiot, natural fool; fool; idiotic, absurd, foolish. C’est — ce que vous faites là; there is no common sense in that. C’est du dernier —; it is the height of absurdity.
idiotie (-ci), n.f., (med.) idiocy, idiotcy, imbecility.
idiotisme, n.m., (gram.) idiom, idiotism; (med.) idiocy, idiotcy.
idolâtre, n.m. and adj., idolater; idolatrous. Elle est — de ses enfants; she dotes on her children.
idolâtrer, v.n., to worship idols.