influence and authority

informed and competent

ingenious and eloquent

ingrat.i.tude and cruelty

inharmonious and irregular

injustice and inhumanity

innocence and fidelity

innuendo and suggestion

inopportune and futile

insanely and blindly

inscrutable and perplexing

insecurity and precariousness

insensibly and graciously

insignificant and transitory

insincere and worthless

insipid and silly

insistent and incongruous

insolence and absurdity

inspiring and animating

instant and momentous

instinctive and rational

insulted and thwarted

intangible and indefinable

integral and indestructible

integrity and honor

intelligence and insight

intense and overpowering

intentness and interest

interesting and engrossing

intimate and familiar

intolerant and b.u.mptious [b.u.mptious = loudly a.s.sertive; pushy]

intractable and untameable

intricate and endless

intrusive and unmannerly

intuitive and axiomatic

invasion and aggression

invective and innuendo [invective = abusive language]

investigation and research

invidious and painful [invidious = rousing ill will, animosity]

inviolate and unscathed

invisible and silent

involuntary and automatic

irksome and distasteful

irrational and excessive

irregular and intermittent

irreligious and immoral

irremediable and eternal

irrepressible and insistent

irreverence and ingrat.i.tude

irritable and churlish [churlish = boorish or vulgar]