English Vocabulary - Words Start from Letter 'I'

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English Vocabulary
Words Start from Letter 'I'

1. IDIOSYNCRASY: A personal peculiarity
   Sentence:
   * Wearing white was one of Whistler's idiosyncrasies.
    Synonyms: eccentricity, foible, mannerism, crotchet, aberration, quirk, singularity
   
   
2. IGNOMINIOUS (Noun: IGNOMINY): Incurring public disgrace
   Sentence:
   * Suffered an ignominious descent from political power.
   Synonyms: infamous, degrading, opprobrious, odious
   Antonyms: illustrious, renowned, preeminent
   
   
3. IMMACULATE: Spotless; pure
   Sentence:
   * An immaculate reputation.
   Synonyms: undefiled, unsullied, unblemished, untarnished
   Antonyms: defiled, sullied, blemished
   
   
4. IMMINENT: Likely to occur soon
   Sentence:
   * Stood in imminent peril.
   Synonym: impending
   
   
5. IMMUNE (Verb: IMMUNIZE): Exempt from; protected from
   Sentence:
   * Immune from taxation.
   Synonym : insusceptible
   
   
6. IMPALE: To pierce through with a pointed instrument
   Sentence:
   * Impaled a spider to the wall.
   
   
7. IMPEACH:
   (1) To accuse (a public official) of wrongdoing
   Sentence:
   * Impeached the judge for accepting a bribe.
   Synonym: arraign
   (2) To cast discredit upon
   Sentence:
   * Impeached his motives.
   Synonyms: call in question, discredit
   
   
8. IMPECCABLE: Faultless
   Sentence:
   * Performed with impeccable skill.
   Synonyms: consummate, irreproachable, unerring, infallible
   Antonyms: culpable, fallible
   
   
9. IMPERVIOUS: Incapable of being penetrated
   Sentence:
   * A mind impervious to new ideas.
   Synonyms: impermeable, impenetrable
   Antonyms: permeable, pervasive
   
   
10. IMPLACABLE: Incapable of being soothed, made peaceful, or forgiving
    Sentence:
    *- implacable resentment.
    Synonyms: unrelenting, inexorable, unappeasable
    Antonyms: placable, forbearing
    
    
11. IMPLICIT:
    (1) Implied but not clearly expressed
    Sentence:
    * An implicit agreement.
    (2) Unquestioning
    Sentence:
    * Implicit confidence.
    Synonyms: tacit, implied
    Antonym: explicit
    
    
12. IMPORT (Noun): Meaning; significance or importance
    Sentence:
    * A matter of great import.
    Synonyms: purport, moment, consequence
    
    
13. IMPOSTOR (Noun: IMPOSTURE): One who pretends to be what he is not.
    Sentence:
    * Unmasked as an impostor.
    Synonyms: quack, mountebank, charlatan, bogus, fraud.
    
    
14. IMPRECATION: A curse
    Sentence:
    * Hurled imprecations at those who would not listen to him.
    Synonyms: execration, malediction, anathema
    Antonyms: benediction, benison
    
    
15. IMPREGNABLE: Unconquerable
    Sentence:
    * An impregnable fortress.
    Synonym; invincible
    Antonym: vulnerable
    
    
16. IMPROPRIETY: Improper act, manners, or expression
    Sentence:
    * Guilty of impropriety in public office
    Synonyms: indecency, indecorum
    Antonym: amenity
    
    
17. IMPROVIDENT: Lacking in thrift; not providing for future needs
    Sentence:
    * An improvident spender.
    Synonyms: prodigal, shiftless
    
    
18. IMPUGN: To attack or criticize as false; to call in question
    Sentence:
    * Impugned his honesty.
    
    
19. INCARCERATE: To imprison
    Sentence:
    * Crushed his opponents by incarcerating them.
    Synonyms: intern, immure
    Antonyms: emancipate, enfranchise
    
    
20. INCISIVE: Cutting. penetrating
    Sentence:
    * Incisive criticism.
    Synonyms: sarcastic, mordant, trenchant, acute
    
    
21. INCOGNITO: With one's identity concealed
    Sentence:
    * Traveled incognito
    
    
22. INCONTROVERTIBLE: Indisputable
    Sentence:
    * Incontrovertible evidence.
    Synonyms: irrefutable, indubitable
    
    
23. INCREMENT: An increase
    Sentence:
    * A salary increment.
    Synonym: accrual
    
    
24. INCUMBENT:
    (1) (Noun): An officeholder
    Sentence:
    * The incumbent in an election.
    (2) (Adj. ): Obligatory
    Sentence:
    * Felt it incumbent to reply.
    Synonyms: mandatory, imperative
    
    
25. INDEFATIGABLE: Untiring
    Sentence:
    * An indefatigable worker.
    Synonyms: unflagging, unremitting, persevering
    
    
26. INDIGENOUS: Native
    Sentence:
    * Rice is indigenous to China.
    Synonyms: innate, inborn
    
    
27. INDOMITABLE: Stubborn in determination not to be subdued
    Sentence:
    * Indomitable courage.
    Synonyms: insuperable, irrepressible, invincible, unyielding
    Antonyms: tractable, amenable, docile, submissive
    
    
28. INFERENCE: A conclusion reached by reasoning from data or premises
    Sentence:
    * An inference drawn from his remarks.
    Synonyms: deduction, implication
    
    
29. INGENIOUS: Demonstrating originality, skill, or resourcefulness
    Sentence:
    * An ingenious device.
    Synonyms: dextrous, inventive, adroit
    Antonyms: maladroit, gauche
    
    
30. INGENUOUS: Simple and straightforward; concealing nothing
    Sentence:
    * An ingenuous plan that anyone could see through.
    Synonyms: unsophisticated, naive, candid
    Antonym: sophisticated
    
    
31. INGRATIATE: To win another's favor or good opinion
    Sentence:
    * Tried to ingratiate himself with the politician.
    
    
32. INHIBIT: To check or hinder
    Sentence:
    * Inhibited his friend from a foolhardy course.
    Synonyms: restrain, curb
    Antonym: promote
    
    
33. INNOCUOUS: Harmless; inoffensive
    Sentence:
    * An innocuous remark, but it enraged him.
    
    
34. INNUENDO: An indirect reference or suggestion (frequently derogatory)
    Sentence:
    * Conveyed his idea by innuendo.
    Synonyms: (Verb) intimate, insinuate
    
    
35. INORDINATE: Excessive
    Sentence:
    * Spoiled by inordinate praise.
    Synonyms: immoderate, intemperate, extravagant
    
    
36. INSATIABLE: Unable to be satisfied
    Sentence:
    * Insatiable greed
    Synonyms: unappeasable, unquenchable, insatiate
    
    
37. INSCRUTABLE: Incapable of interpretation or understanding
    Sentence:
    * The inscrutable smile of the Mona Lisa.
    Synonyms: unfathomable, cryptic, enigmatic
    
    
38. INSIDIOUS: Working secretly or slyly
    Sentence:
    * That insidious disease, cancer
    Synonyms: wily, crafty, furtive, treacherous, artful, Guileful, perfidious.
    
    
39. INSTIGATE: To stir tip.
    Sentence:
    * Instigated discontent among the soldiers.
    Synonyms: foment, incite.
    
    
40. INTEGRITY: Honesty, moral soundness
    Sentence:
    * A man of proved integrity.
    Synonyms: probity, uprightness, incorruptibility.
    
    
41. INVEIGH: (Noun- INVECTIVE): To speak angrily or bitterly
    Sentence:
    * Inveighed against economic discrimination.
    Synonyms: rail, denounce, fulminate, vituperate.
    
    
42. IRASCIBLE: Easily angered.
    Sentence:
    * Even petty things made Peter irascible.
    Synonyms: choleric, petulant, testy, peevish, splenetic, touchy.
    Antonyms: placid, equable.
    
    
43. IRE: Anger:
    Sentence:
    * Aroused his ire.
    Synonyms: resentment; (adj.) irate, incensed
    
    
44. IRKSOME: Tedious, monotonous
    Sentence:
    * An irksome chore that no one liked.
    
    
45. ITINERANT: Traveling about; wandering
    Sentence:
    * An itinerant salesman.
    Synonym: nomadic

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Adj. = Adjective