impermutable, adj., that is not permutable.
impersonnalité, n.f., (philos.) impersonality.
impersonnel, -le, adj., impersonal.
impersonnel, n.m., (gram.) impersonal verb.
impersonnellement (-nèl-mān), adv., (gram.) impersonally.
impersuadé, -e, adj., unpersuaded.
impersuasible, adj., impersuasible.
impertinemment (-na-mān), adv., impertinently, insolently; sillily, foolishly, nonsensically, pertly.
impertinence, n.f., impertinence, insolence, sauciness; rudeness; silliness, offensive thing.
impertinent, -e, n. and adj., impertinent person, saucy person, sauce-box; impertinent, saucy, insolent, pert.