I

I adjured him [adjured = command or enjoin solemnly, as under oath]

I am not without a lurking suspicion

I bemoaned my unlucky fate

I could almost allege it as a supreme example

I have somewhat overshot the mark

I lost myself in a reverie of gratitude

I made bold to retort

I must hazard the story

I was extremely perplexed

I will permit myself the liberty of saying

I would fain believe [fain = happily; gladly]

Illuminate with sinister effect

Immediate and effectual steps

Immense capacity for ceaseless progress

Immunity from criticism and control

Impartial and exacting judgment

Impatience of despotic influence

Impelled by strong conviction

Imperiled in a restless age

Imperious in its demands [imperious = arrogantly domineering]

Impotent outbreaks of unreasoning rage

Impromptu parades of noisy patriotism

In a diversity of application

In a fever of apprehension

In a frenzy of fussy excitement

In a frowning abstraction

In a great and fruitful way

In a high degree culpable

In a kind of confused astonishment

In a most commendable fashion

In a most impressive vein

In a position of undisputed supremacy

In a rapture of imagined ecstasy

In a secret and surreptitious way [surreptitious = done by clandestine or stealthy means]

In a spirit of friendliness and conciliation

In a state of mulish reluctance [mulish = stubborn and intractable]

In a state of nervous exacerbation

In a state of virtuous complacency

In a tone of uneasy interrogation

In a transport of ambitious vanity

In a whirlwind of feeling and memory

In accents embarrassed and hesitating

In alliance with steady clearness of intellect

In amazed ejaculation

In an eminent and unique sense

In an eminent degree

In deference to a unanimous sentiment

In extenuation of the past

In high good humor

In his customary sententious fashion [sententious = terse and energetic; pithy]

In its most odious and intolerable shape

In language terse yet familiar

In moments of the most imminent peril

In quite incredible confusion

In seasons of difficulty and trial

In spite of plausible arguments

In terms of imperishable beauty

In the dim procession of years

In the highest conceivable degree

In the local phrase

In the nature of things

In the ordinarily accepted sense

In the realm of conjecture

In the scheme of things

In the tone of one who moralizes

In the twinkling of an eye

In the world of letters

In tones of genuine admiration

Incapable of flashy make-believe

Incited by a lust for gain

Incomparable lucidity and penetrativeness

Inconceivable clumsiness of organization

Indulge a train of gentle recollection

Indulging a sickly and nauseating petulance

Ineffably dreary and unpicturesque

Infected with a feverish dissatisfaction

Infuse a wholesome terror

Inimical to true and determined principle [Inimical = harmful; adverse]

Inimitable grace and felicity [inimitable = defying imitation; matchless]

Injudicious and inelegant ostentation

Innumerable and incessant creations

Inordinate greed and love of wealth

Insatiably greedy of recognition

Insensibility to moral perspective and proportion

Insolent and riotous excess

Inspired by a vague malevolence

Inspirited by approval and applause

Instances might be multiplied indefinitely

Instantly alive to the slightest breach of decorum

Insufferable violence to the feelings

Intense and stubborn dogmatism

Intense sensitiveness to injustice

Intercourse with polished society

Intervals of respite and repose

Inveigh against established customs [inveigh = angry disapproval; protest vehemently]

Invested with a partial authority

Inveterate forces of opposition

Invincible jealousy and hate

Involuntary thrill of gratified vanity

Involved in profound uncertainty

Involving ourselves in embarrassments

Inward appraisal and self-renouncement

Irregulated and desultory education [desultory = haphazard; random]

Irrelevant to the main issue

Irresistibly impelled by conscience

Irritable bitterness and angry suspicion

It assumes the shape of malignity

It betrays a great want of prudence and discernment

It defies description

It dissipates every doubt and scruple

It enslaves the imagination

It extorted from him expressions of irritability

It gives one a little grip at the throat

It has been stigmatized as irrelevant

It has more than passing interest

It has seldom been surpassed

It imposes no constraint

It is a capital blunder

It is a common error among ignorant people

It is a consoling reflection

It is a mark of great instability

It is a staggering thought

It is always something vicious

It is an odd jealousy

It is an intolerable idea

It is impossible to resist acknowledging this

It is little more than a platitude

It is not consistent with elevated and dignified character

It is not wholly insignificant

It is notoriously easy to exaggerate

It is the common consent of men

It is unnecessary to multiply instances

It makes life insupportable

It must be a matter of conjecture

It occasions suspicion and discontent

It runs counter to all established customs

It was a matter of notoriety

It wears a ragged and dangerous front

It would be a fruitless and unthankful task

It would be superfluous to say

It would not seem an improbable conclusion

Its dominating and inspiring influence