Words To Improve And Enlarge Your English Vocabulary List I


Ichthyic adv. Fish-Like.
Ichthyology n. The Branch Of Zoology That Treats Of Fishes.
Ichthyosaurs n. A Fossil Reptile.
Icily Ad v. Frigidly.
Ignoble adv. Low In Character Or Purpose.
Ignominious adv. Shameful.
Iliad n. A Greek Epic Poem Describing Scenes From The Siege Of Troy.
Illicit adv. Unlawful.
Illimitable adv. Boundless.
Illiterate adv. Having Little Or No Book-Learning.
Ill-Natured adv. Surly.
Illumine v. To Make Bright Or Clear.
Illusion n. An Unreal Image Presented To The Senses.
Illusive adv. Deceptive.
Imbibe v. To Drink Or Take In.
Imbroglio n. A Misunderstanding Attended By Ill Feeling, Perplexity, Or Strife.
Imbrue v. To Wet Or Moisten.
Imitation n. That Which Is Made As A Likeness Or Copy.
Immeasurable adv. Indefinitely Extensive.
Immense adv. Very Great In Degree, Extent, Size, Or Quantity.
Immerse v. To Plunge Or Dip Entirely Under Water Or Other Fluid.
Immersion n. The Act Of Plunging Or Dipping Entirely Under Water Or Another Fluid.
Imminent adv. Dangerous And Close At Hand.
Immiscible adv. Separating, As Oil And Water.
Immoral adv. Habitually Engaged In Licentious Or Lewd Practices.
Immortalize v. To Cause To Last Or To Be Known Or Remembered Throughout A Great Or Indefinite Length Of Time.
Immovable adv. Steadfast.
Immune adv. Exempt, As From Disease.
Immutable adv. Unchangeable.
Impatience n. Unwillingness To Brook Delays Or Wait The Natural Course Of Things.
Impeccable adv. Blameless.
Impecunious adv. Having No Money.
Impede v. To Be An Obstacle Or To Place Obstacles In The Way Of.
Imperfectible adv. That Can Not Be Perfected.
Imperil v. To Endanger.
Imperious adv. Insisting On Obedience.
Impermissible adv. Not Permissible.
Impetus n. Any Impulse Or Incentive.
Impiety n. Irreverence Toward God.
Impious adv. Characterized By Irreverence Or Irreligio
Implausible adv. Not Plausible.
Impliable adv. Capable Of Being Inferred.
Implicate v. To Show Or Prove To Be Involved In Or Concerned
Importation n. The Act Or Practice Of Bringing From One Country Into Another.
Importunate adv. Urgent In Character, Request, Or Demand.
Importune v. To Harass With Persistent Demands Or Entreaties.
Impotent adv. Destitute Of Or Lacking In Power, Physical, Moral, Or Intellectual.
Impoverish v. To Make Indigent Or Poor.
Impracticable adv. Not Feasible.
Impregnable adv. That Can Not Be Taken By Assault.
Impregnate v. To Make Pregnant.
Impromptu n. Anything Done Or Said On The Impulse Of The Moment.
Improper adv. Not Appropriate, Suitable, Or Becoming.
Impropriety n. The State Or Quality Of Being Unfit, Unseemly, Or Inappropriate.
Improvident adv. Lacking Foresight Or Thrift.
Improvise v. To Do Anything Extemporaneously Or Offhand.
Imprudent adv. Heedless.
Impudence n. Insolent Disrespect.
Impugn v. To Assail With Arguments, Insinuations, Or Accusations.
Impulsion n. Impetus.
Impute v. To Attribute.
Inadequate adv. Insufficient.
Inadmissible adv. Not To Be Approved, Considered, Or Allowed, As Testimony.
Inarticulate adv. Speechless.
Incandescence n. The State Of Being White Or Glowing With Heat.
Incandescent adv. White Or Glowing With Heat.
Inchoative n. That Which Begins, Or Expresses Beginning.
Incidence n. Casual Occurrence.
Incident n. A Happening In General, Especially One Of Little Importance.
Incipient adv. Initial.
Incisor n. A Front Or Cutting Tooth.
Incite v. To Rouse To A Particular Action.
Incitement n. That Which Moves To Action, Or Serves As An Incentive Or Stimulus.
Incoercible adv. Incapable Of Being Forced, Constrained, Or Compelled.
Incomparable adv. Matchless.
Incompatible adv. Discordant.
Incompetence n. General Lack Of Capacity Or Fitness.
Incompressible adv. Resisting All Attempts To Reduce Volume By Pressure.
Inconceivable adv. Incomprehensible.
Incongruous adv. Unsuitable For The Time, Place, Or Occasio
Inconsequential adv. Valueless.
Inconsiderable adv. Small In Quantity Or Importance.
Inconvenient adv. Interfering With Comfort Or Progress.
Indefensible adv. Untenable.
Indefinitely Ad v. In A Vague Or Uncertain Way.
Indelible adv. That Can Not Be Blotted Out, Effaced, Destroyed, Or Removed.
Indigenous adv. Native.
Indigent adv. Poor.
Indigestible adv. Not Digestible, Or Difficult To Digest.
Indigestion n. Difficulty Or Failure In The Alimentary Canal In Changing Food Into Absorptive Nutriment.
Indignant adv. Having Such Anger And Scorn As Is Aroused By Meanness Or Wickedness.
Indignity n. Unmerited Contemptuous Conduct Or Treatment.
Indispensable adv. Necessary Or Requisite For The Purpose.
Indistinct adv. Vague.
Indulgence n. The Yielding To Inclination, Passion, Desire, Or Propensity In Oneself Or Another.
Indulgent adv. Yielding To The Desires Or Humor Of Oneself Or Those Under One’S Care.
Inefficiency n. That Which Does Not Accomplish An Intended Purpose.
Inefficient adv. Not Accomplishing An Intended Purpose.
Ineligible adv. Not Suitable To Be Selected Or Chose
Inexcusable adv. Not To Be Justified.
Inexhaustible adv. So Large Or Furnishing So Great A Supply As Not To Be Emptied, Wasted, Or Spent.
Inextensible adv. Of Unchangeable Length Or Area.
Inference n. The Derivation Of A Judgment From Any Given Material Of Knowledge On The Ground Of Law.
Infernal adv. Akin To Or Befitting Hell Or Its Occupants.
Infest v. To Be Present In Such Numbers As To Be A Source Of Annoyance, Trouble, Or Danger.
Infidel n. One Who Denies The Existence Of God.
Infidelity n. Disloyalty.
Infinite adv. Measureless.
Infinity n. Boundless Or Immeasurable Extension Or Duratio
Infirm adv. Lacking In Bodily Or Mental Strength.
Inflammation n. A Morbid Process In Some Part Of The Body Characterized By Heat, Swelling, And Pai
Inflexible adv. That Can Not Be Altered Or Varied.
Influence n. Ability To Sway The Will Of Another.
Influential adv. Having The Power To Sway The Will Of Another.
Infuse v. To Instill, Introduce, Or Inculcate, As Principles Or Qualities.
Infusion n. The Act Of Imbuing, Or Pouring I
Ingenious adv. Evincing Skill, Originality, Or Cleverness, As In Contrivance Or Arrangement.
Ingraft v. To Set Or Implant Deeply And Firmly.
Ingratiate v. To Win Confidence Or Good Graces For Oneself.
Ingratitude n. Insensibility To Kindness.
Ingredient n. Component.
Inherence n. The State Of Being Permanently Existing In Something.
Inherent adv. Intrinsic.
Inhibit v. To Hold Back Or In.
Inhospitable adv. Not Disposed To Entertain Strangers Gratuitously.
Inhuman adv. Savage.
Inhume v. To Place In The Earth, As A Dead Body.
Inimical adv. Adverse.
Iniquity n. Gross Wrong Or Injustice.
Inkling n. A Hint.
Inland adv. Remote From The Sea.
Inlet n. A Small Body Of Water Leading Into A Larger.
Inmost adv. Deepest Withi
Innocuous adv. Harmless.
Innovate v. To Introduce Or Strive To Introduce New Things.
Innuendo n. Insinuatio
Innumerable adv. Countless.
Inquisition n. A Court Or Tribunal For Examination And Punishment Of Heretics.
Inquisitive adv. Given To Questioning, Especially Out Of Curiosity.
Inquisitor n. One Who Makes An Investigatio
Inroad n. Forcible Encroachment Or Trespass.
Insecure adv. Not Assured Of Safety.
Insensible adv. Imperceptible.
Insentient adv. Lacking The Power Of Feeling Or Perceiving.
Insolence n. Pride Or Haughtiness Exhibited In Contemptuous And Overbearing Treatment Of Others.
Insolent adv. Impudent.
Insomnia n. Sleeplessness.
Inspector n. An Official Appointed To Examine Or Oversee Any Matter Of Public Interest Or Importance.
Instance n. A Single Occurrence Or Happening Of A Given Kind.
Instant n. A Very Brief Portion Of Time.
Instantaneous adv. Done Without Perceptible Lapse Of Time.
Instigate v. To Provoke.
Instigator n. One Who Incites To Evil.
Instill v. To Infuse.
Instructive adv. Conveying Knowledge.
Insufficiency n. Inadequacy.
Insufficient adv. Inadequate For Some Need, Purpose, Or Use.
Insular adv. Pertaining To An Island.
Insulate v. To Place In A Detached State Or Situation.
Insuperable adv. Invincible.
Insuppressible adv. Incapable Of Being Concealed.
Insurgence n. Uprising.
Insurgent n. One Who Takes Part In Forcible Opposition To The Constituted Authorities Of A Place.
Insurrection n. The State Of Being In Active Resistance To Authority.
Intangible adv. Not Perceptible To The Touch.
Integrity n. Uprightness Of Character And Soundness Of Moral Principle.
Intention n. That Upon Which The Mind Is Set.
Interact v. To Act Reciprocally.
Interdict n. Authoritative Act Of Prohibitio
Interim n. Time Between Acts Or Periods.
Interlocutor n. One Who Takes Part In A Conversation Or Oral Discussio
Intermission n. A Recess.
Interpose v. To Come Between Other Things Or Persons.
Interposition n. A Coming Betwee
Interpreter n. A Person Who Makes Intelligible The Speech Of A Foreigner By Oral Translatio
Interrogate v. To Examine Formally By Questioning.
Interrogative adv. Having The Nature Or Form Of A Questio
Interrogatory n. A Question Or Inquiry.
Interrupt v. To Stop While In Progress.
Intersect v. To Cut Through Or Into So As To Divide.
Intervale n. A Low Tract Of Land Between Hills, Especially Along A River.
Intervene v. To Interfere For Some End.
Intestacy n. The Condition Resulting From One’S Dying Not Having Made A Valid Will.
Intestate adv. Not Having Made A Valid Will.
Intestine n. That Part Of The Digestive Tube Below Or Behind The Stomach, Extending To The Anus.
Intolerance n. Inability Or Unwillingness To Bear Or Endure.
Intolerant adv. Bigoted.
Intoxicant n. Anything That Unduly Exhilarates Or Excites.
Intoxicate v. To Make Drunk.
Intricacy n. Perplexity.
Intricate adv. Difficult To Follow Or Understand.
Intrigue n. A Plot Or Scheme, Usually Complicated And Intended To Accomplish Something By Secret Ways.
Introspection n. The Act Of Observing And Analyzing One’S Own Thoughts And Feelings.
Introversion n. The Act Of Turning Or Directing Inward, Physically Or Mentally.
Introvert v. To Turn Within.
Intrude v. To Come In Without Leave Or License.
Intrusion n. The Act Of Entering Without Warrant Or Invitation; Encroachment.
Inure v. To Harden Or Toughen By Use, Exercise, Or Exposure.
Invariable adv. Unchangeable.
Inventive adv. Quick At Contrivance.
Inverse adv. Contrary In Tendency Or Directio
Inversion n. Change Of Order So That The First Shall Become Last And The Last First.
Invert v. To Turn Inside Out, Upside Down, Or In Opposite Direction.
Invidious adv. Showing Or Feeling Envy.
Invigorate v. To Animate.
Involution n. Complicatio
Iota n. A Small Or Insignificant Mark Or Part.
Irascible adv. Prone To Anger.
Irate adv. Moved To Anger.
Ire n. Wrath.
Iridescence n. A Many-Colored Appearance.
Iridescent adv. Exhibiting Changing Rainbow-Colors Due To The Interference Of The Light.
Irk v. To Afflict With Pain, Vexation, Or Fatigue.
Irksome adv. Wearisome.
Irony n. Censure Or Ridicule Under Cover Of Praise Or Compliment.
Irradiance n. Luster.
Irradiate v. To Render Clear And Intelligible.
Irrational adv. Not Possessed Of Reasoning Powers Or Understanding.
Irreligious adv. Indifferent Or Opposed To Religio
Irreverence n. The Quality Showing Or Expressing A Deficiency Of Veneration, Especially For Sacred Things.
Irreverent adv. Showing Or Expressing A Deficiency Of Veneration, Especially For Sacred Things.
Irreverential adv. Showing Or Expressing A Deficiency Of Veneration, Especially For Sacred Things.
Irreversible adv. Irrevocable.
Irrigant adv. Serving To Water Lands By Artificial Means.
Irritant n. A Mechanical, Chemical, Or Pathological Agent Of Inflammation, Pain, Or Tensio
Irritate v. To Excite Ill Temper Or Impatience In.
Irruption n. Sudden Invasio
Isle n. An Island.
Islet n. A Little Island.
Isobar n. A Line Joining Points At Which The Barometric Pressure Is The Same At A Specified Moment.
Isochronous adv. Relating To Or Denoting Equal Intervals Of Time.
Isolate v. To Separate From Others Of Its Kind.
Isothermal adv. Having Or Marking Equality Of Temperature.
Itinerant adv. Wandering.
Itinerary n. A Detailed Account Or Diary Of A Journey.
Itinerate v. To Wander From Place To Place.

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