iconoclast	noun	a person who destroys religious images or opposes their veneration
idolatry	noun	excessive admiration of
idyll	noun	a lighthearted carefree episode that is a fit subject for an idyll; a romantic interlude
ignoble	adjective	of low birth or common origin; plebeian
ignominious	adjective	shameful dishonorable undignified disgraceful
imbroglio	noun	a confused mass
impecunious	adjective	having very little or no money usually habitually; penniless
imperious	adjective	befitting or characteristic of one of eminent rank or attainments; commanding, dominant; marked by arrogant assurance; domineering
impiety	noun	lack of reverence or dutifulness
importune	verb	to beg persistently and urgently
impromptu	noun	something that is impromptu
impugned	verb	to assail by words or arguments; oppose or attack as false or lacking integrity
impute	verb	to lay the responsibility or blame for often falsely or unjustly
inchoate	adjective	newly begun, incomplete; not organized
incorrigibility	adjective	incapable of being corrected or amended: as a (1); not reformable; depraved (2); delinquent; not manageable; unruly; unalterable, inveterate
inculcate	verb	to teach and impress by frequent repetitions or admonitions
incursion	noun	a hostile entrance into a territory; raid
indefatigability	adjective	incapable of being fatigued; untiring
indigence	noun	a level of poverty in which real hardship and deprivation are suffered and comforts of life are wholly lacking
ineluctable	adjective	not to be avoided, changed, or resisted; inevitable
ingenuous	adjective	innocent; lacking in sophistication or worldliness
inimical	adjective	being adverse often by reason of hostility or malevolence
inscrutable	adjective	not readily investigated, interpreted, or understood; mysterious
insipid	adjective	lacking taste or savor; tasteless
interdict	noun	a roman catholic ecclesiastical censure withdrawing most sacraments and christian burial from a person or district
intransigence	noun	of a state refusing to compromise or to abandon an extreme position or attitude
intransigent	adjective	characterized by refusal to compromise or to abandon an extreme position or attitude; uncompromising
inundate	verb	to cover with a flood; overflow
inured	verb	made tough by habitual exposure
involute	adjective	curled spirally b (1); curled or curved inward (2); having the edges rolled over the upper surface toward the midrib; having the form of an involute
irascible	adjective	marked by hot temper and easily provoked anger
irrevocable	adjective	not possible to revoke; unalterable
itinerate	verb	to travel from place to place to peregrinate