increasingly incredible incredibly increment incremental incrementally incriminate incriminating incrimination incubate incubation incubator incurable incus indaba indebted indecency indecent indecision indecisive indeed indefensible indefinite indefinitely indelicate independence independent index index-linked index-linking indicate indication indicative indicator indictment indie indifference indigenous indigent indigestion indignant indignation indignity indigo indirect indirectly indiscreet indispensable indisputable indisputably indistinct individual indomitable indoor induce inducement induction indulge indulgence industrial industrialism industrialize industry inedible ineffective ineffectively ineffectiveness ineffectual ineffectually inefficient inept inequality inert inertia inestimable inevitable inevitably inexhaustible inexorable inexpedient inexperienced inexplicable inextricable infallibility infallible infallibly infamous infamy infancy infant infanticide infantry infantryman infatuated infatuation infect infected infection infectious infer