illegitimacy illegitimate illegitimately illicit illicitly illiterate illness illogical illuminate illumine illusion illusive illustrate illustration illustrator illustrious image imagery imaginable imaginary imagination imaginative imagine imam imbue imitate immaculate immature immediate immediately immense immensely immerse immigrant immigrate immigration imminent immobile immoderate immodest immoral immortal immortality immovable immune immunity immunize impact impaired impairment impartial impassable impasse impasto impatience impatient impeach impeachment impeccable impediment impel impending imperative imperfect imperial imperialism imperialist imperil impermissible impersonal impertinence impertinent imperturbable impetuous impetus impish implacable implant implement implication implicit implicitly implode implore implosion imply impolite import importance important importantly importunate importune impose imposition impossibility impossible impoverish impoverished impregnable