immaculate :: spotless; flawless; absolutely clean imminent :: near at hand; impending immobility :: state of being immovable immolate :: offer as a sacrifice immune :: resistant to; free or exempt from immure :: imprison; shut up in confinement immutable :: unchangeable impair :: injure; hurt impale :: pierce impalpable :: imperceptible; intangible impartial :: not biased; fair impassable :: not able to be traveled or crossed impasse :: predicament from which there is no escape impassive :: without feeling; imperturbable; stoical impeach :: charge with crime in office; indict impeccable :: faultless impecunious :: without money impede :: hinder; block impediment :: hindrance; stumbling-block impel :: drive or force onward impending :: nearing; approaching impenetrable :: not able to be pierced or entered; beyond understanding impenitent :: not repentant imperative :: absolutely necessary; critically important imperceptible :: unnoticeable; undetectable imperial :: like an emperor; related to an empire imperious :: domineering; haughty impermeable :: impervious; not permitting passage through its substance impertinent :: 1) having no connection with a given matter; 2) insolent; rude imperturbable :: calm; placid impervious :: impenetrable; *incapable of being damaged or distressed* impetuous :: violent; hasty; rash impetus :: moving force; incentive; stimulus impiety :: irreverence; lack of respect for God impinge :: 1) infringe; 2) touch; collide with impious :: irreverent implacable :: incapable of being pacified implausible :: unlikely; unbelievable implement :: put into effect; supply with tools implicate :: incriminate; show to be involved implication :: something hinted at or suggested implicit :: understood but not stated implode :: burst inward implore :: beg imply :: suggest a meaning not expressed; signify impolitic :: not wise imponderable :: weightless import :: significance importunate :: urging; demanding importune :: beg persistently imposture :: assuming a false identity; masquerade impotent :: weak; ineffective imprecation :: curse impregnable :: invulnerable impromptu :: without previous preparation; off the cuff; on the spur of the moment impropriety :: improperness; unsuitableness improvident :: thriftless improvise :: compose on the spur of the moment imprudent :: lacking caution; injudicious

impudence :: impertinence; insolence impugn :: dispute or contradict (often in an insulting way); challenge; gainsay impuissance :: powerlessness; feebleness impunity :: freedom from punishment or harm impute :: *attribute; ascribe* inadvertently :: unintentionally; by oversight; carelessly inalienable :: not to be taken away; nontransferable inane :: silly; senseless inanimate :: lifeless inarticulate :: speechless; producing indistinct speech inaugurate :: begin formally; install in office incandescent :: strikingly bright; shining with intense heat incantation :: singing or chanting of magic spells; magical formula incapacitate :: disable incarcerate :: imprison incarnate :: endowed with flesh; personified incarnation :: act of assuming a human body and human nature incendiary :: having to do with the willful destruction of property by fire; arsonist incense :: 1) --- sticks 2) enrage; infuriate incentive :: spur; motive inception :: start; beginning incessant :: uninterrupted; unceasing