infertilité, n.f., infertility, unfruitfulness, barrenness.
infester, v.a., to infest, to harass, to annoy; to overrun; to haunt.
infidèle, adj., unfaithful, faithless; untrue, unbelieving; false, disloyal.
infidèle, n.m.f., unfaithful person; infidel, unbeliever.
infidèlement, adv., unfaithfully, faithlessly.
infidélité, n.f., infidelity, unbelief, faithlessness, unfaithfulness; dishonesty, deceitfulness; inaccuracy. Faire des —s à; to be unfaithful to.
infiltration, n.f., infiltration.
s’infiltrer, v.r., to infiltrate; to percolate; (fig.) to spread, to creep.
infime, adj., (of ranks) lowest.
infimité, n.f., lowest degree, depth; lowest state of abjection; nothingness.