ingrate

n. 忘恩负义的人

infuriate, infuriating, infuriatingly, infuse, infusion, ingenious, ingeniously, ingenue, ingenuity, ingenuous, ingenuously, ingenuousness, ingest, ingle-nook, inglorious, ingloriously, ingoing, ingot, ingrain, ingrained, ingratiate, ingratiating, ingratiatingly, ingratiation, ingratitude, ingredient, ingress, ingrowing, inhabit, inhabitable, inhabitant, inhale, inhaler, inharmonious, inharmoniously, inharmoniousness, inherent, inherently, inherit, inheritance,