Home of English Grammar

Grammar Guide
  • Home
  • Exercises
  • Matches
  • Rules
  • Tools
    • Grammar Checker
    • Very Replacer
    • Word Counter
  • Top Social Media Posts
  • Various Posts
  • Vocabulary
  • Writing Guides
  • Contact

100 One-Word Substitutions for High School Students

April 28, 2026

100 One-Word Substitutions for High School Students

No. Item Definition
1. abbreviate to shorten a word or text
2. abdicate to give up power
3. abhor to hate deeply
4. abstain to choose not to do
5. accomplice partner in a wrongdoing
6. adolescent a teenager
7. adversary an opponent or enemy
8. altruist a selfless person
9. ambidextrous able to use both hands
10. ambiguous having more than one meaning
11. anonymous with no name given
12. antidote remedy against poison
13. apathetic showing no interest or feeling
14. apostate one who abandons beliefs
15. arsonist person who sets fires deliberately
16. ascetic person avoiding physical pleasures
17. bachelor an unmarried man
18. benevolent kind and generous
19. bibliophile a lover of books
20. biography story of another person’s life
21. blunder a careless mistake
22. braggart a boastful person
23. candid honest and direct
24. celibate person who remains unmarried
25. centenarian person aged one hundred
26. coerce to force by pressure
27. connoisseur expert judge in taste
28. convalescent recovering from illness
29. credulous too ready to believe
30. culprit person responsible for a crime
31. debut first public appearance
32. decipher to make out meaning
33. delegate person chosen to represent
34. demolish to tear down completely
35. denounce to condemn publicly
36. destitute extremely poor
37. detest to hate intensely
38. diplomat official managing foreign relations
39. disclose to reveal
40. discreet careful and tactful
41. eccentric strangely unusual
42. egotist self-centered person
43. eligible qualified to be chosen
44. eloquent fluent and persuasive
45. emancipate to set free
46. embezzle to steal entrusted money
47. emigrate to leave one’s country
48. enigma something mysterious
49. epitaph words on a tomb
50. eradicate to destroy completely
51. famine extreme shortage of food
52. fanatic person with extreme enthusiasm
53. feasible possible and practical
54. fictitious imaginary; not real
55. frugal careful with money
56. fugitive person running from law
57. garrulous talking too much
58. glutton person who eats excessively
59. gregarious fond of company
60. guardian protector or caretaker
61. homophone word sounding like another
62. hostile unfriendly or aggressive
63. hypocrite person pretending moral goodness
64. idealist person guided by ideals
65. illegible too unclear to read
66. immigrant person coming to live abroad
67. impartial fair and unbiased
68. impersonate to imitate another person
69. incognito with identity concealed
70. incorrigible unable to be corrected
71. indigenous native to a place
72. indispensable absolutely necessary
73. inevitable certain to happen
74. lexicographer dictionary writer
75. longevity long life
76. lucrative bringing much profit
77. magnanimous generous and forgiving
78. misanthrope person who dislikes people
79. monogamy marriage to one person
80. moribund near death
81. mute unable or unwilling to speak
82. negligent careless in duty
83. nomad person with no fixed home
84. pacifist person opposed to war
85. pauper very poor person
86. perjury lying under oath
87. pessimist person expecting the worst
88. philanthropist person who helps mankind
89. plagiarism using others’ work as one’s own
90. pseudonym false name used by writer
91. ubiquitous present everywhere
92. ultimatum final demand or terms
93. unanimous fully in agreement
94. uncanny strangely mysterious
95. underdog expected loser
96. underestimate judge too low
97. undulate move in waves
98. unearth discover by digging
99. unkempt untidy in appearance
100. unprecedented never done before
  • Share
  • Post
  • Post
  • Email
NEW: Try Matches, our daily vocabulary challenge. Pick a topic and level and match words with definitions to boost your vocabulary.
2,485,429 
760,468 
Improve Your Grammar
  • Download 2026 Grammar Guide (PDF)
  • Free Weekly Exercises & Vocabulary
  • Join over 3 Million English Learners
We respect your privacy. Unsubscribe anytime.

Grammar Checker

GrammarCheck.net - Try online
Hint → Bookmark GrammarCheck for future use.

Latest Posts

  • 100 One-Word Substitutions for High School Students April 28, 2026
  • Complex Inversion Structures Exercise April 28, 2026
  • 100 Ways to Say “That works for me” April 28, 2026
  • 100 Common Collocations April 28, 2026
  • 100 Words to Describe Studying April 28, 2026
  • 100 Words Every Runner Should Know April 28, 2026
  • 100 Words to Describe Strategies April 28, 2026

Copyright © 2026 · EnglishGrammar.org
Disclaimer · Privacy Policy · Sitemap · Terms

Improve Your Grammar
  • Download 2026 Grammar Guide (PDF)
  • Free Weekly Exercises & Vocabulary
  • Join over 3 Million English Learners
We respect your privacy. Unsubscribe anytime.