incongelable, adj., uncongealable.
incongru, -e, adj., incongruous; unfit, unseemly, indecorous.
incongruité, n.f., incongruity; impropriety, unseemliness; indecency.
incongrûment, adv., incongruously, improperly, in an unseemly manner, indecorously.
inconnu, -e, adj., unknown.
inconnu, n.m., -e, n.f., unknown person; stranger.
inconnu, n.m., (n.p.) the unknown, that which is unknown.
inconnue, n.f., (math.) unknown quantity.
inconquis, -e, adj., unconquered.