innocence, n. blamelessness, guilelessness, guiltlessness, impeccability, inoffensiveness.
innocent, a. [blameless], [guileless], [guiltless], impeccable, inoffensive, [sinless], [artless], inculpable, irreproachable, irreprehensible, inerrable, [irresponsible], [virtuous], [unsophisticated].
inquiring, a. [curious], [inquisitive].
inquiry, n. [question], [query], interrogation; research, investigationm scrutiny.
inquisitive, a. [inquiring], [mousing], [curious], [intrusive], prying, [meddlesome]. Antonyms: [indifferent], [unconcerned], uninterested.
insane, a. demented, [crazy], [mad], deranged, [delirious], dementate; paranoiac. Antonyms: [sane], [rational].
insane asylum. [bedlam], bethlehem, [madhouse], [retreat].
insanity, n. dementia, alienation of [mind], [madness], lunacy, [craziness], derangement, [frenzy], delirium, [mania], [hallucination], aberration of [mind], bedlamism; paranoia, monomania. Antonyms: [sanity], rationality, [lucidity]. Associated words: alienist, alienism.
insatiable, a. [unappeasable]; [voracious], [rapacious], omnivorous.
inscrutable, a. [incomprehensible], inexplicable, [unsearchable].