interrogatory (in'te-rog'a-to-ri), a question.
interval (in'ter-val), a space of time between any two events.
interview (in'ter-vu), a meeting face to face.
intolerable (in-tol'er-a-b'l), not capable of being endured.
intricate (in'tri-kat), entangled.
intrigue (in-treg'), a plot or conspiracy.
intruder (in-trood'er), one who enters without invitation.
inundate (in'un-dat), cover with a flood.
inured (in-urd'), accustomed.
invade (in-vad'), enter for conquest or plunder.