High school-level vocabulary words 1. Aberration - a departure from what is normal 2. Abridge - to shorten or condense 3. Bellicose - eager to fight or engage in warfare 4. Cacophony - a harsh, discordant mixture of sounds 5. Deleterious - causing harm or damage 6. Egregious - outstandingly bad or shocking 7. Facetious - treating severe issues with inappropriate humor 8. Garrulous - excessively talkative, especially on trivial matters 9. Hapless - unfortunate or unlucky 10. Iconoclast - a person who challenges established beliefs or institutions 11. Juxtapose - to place or deal with things side by side for comparison 12. Kindle - to ignite or arouse a feeling 13. Luminous - emitting light, or full of light; shining 14. Meticulous - showing great attention to detail; very careful and precise 15. Nebulous - unclear, vague, or hazy 16. Obstinate - stubbornly refusing to change one's opinion or course of action 17. Paragon - a person or thing regarded as a perfect example of a particular quality 18. Quandary - a state of uncertainty or perplexity 19. Recalcitrant - stubbornly resistant to authority or control 20. Surreptitious - kept secret, mainly because it would not be approved of 21. Trepidation - a feeling of fear or anxiety about something that may happen 22. Ubiquitous - present, appearing, or found everywhere 23. Vehement - showing strong feelings; forceful, passionate, or intense 24. Wistful - having a feeling of vague or regretful longing 25. Xenophobia - a strong dislike or fear of people from other countries or cultures 26. Yearn - have an intense feeling of longing for something 27. Zealot - a person who is fanatical and uncompromising in pursuit of their beliefs 28. Alacrity - brisk and cheerful readiness 29. Belligerent - hostile and aggressive 30. Capitulate - to surrender or give in 31. Desultory - lacking a plan, purpose, or enthusiasm; random 32. Eloquent - fluent or persuasive in speaking or writing 33. Fortuitous - happening by chance, often in a positive way 34. Haughty - arrogantly superior and disdainful 35. Impetuous - acting or done quickly and without thought or care 36. Juxtaposition - the fact of two things being seen or placed close together for contrasting effect 37. Kinetic - relating to or resulting from motion 38. Lethargic - affected by lethargy; sluggish and apathetic 39. Malleable - easily influenced or changed; pliable 40. Nebulous - unclear, vague, or illdefined 41. Obfuscate - to render unclear, confusing, or difficult to understand 42. Paragon - a person or thing viewed as a model of excellence 43. Quixotic - exceedingly idealistic, unrealistic, and impractical 44. Resilient - able to recover quickly from difficult conditions 45. Sycophant - a person who acts obsequiously towards someone important to gain advantage 46. Taciturn - reserved or uncommunicative in speech; saying little 47. Ubiquitous - present, appearing, or found everywhere 48. Vacillate - to alternate or waver between different opinions or actions 49. Wane - to decrease gradually in size, intensity, or power 50. Xenophile - a person who is attracted to foreign cultures or people 51. Yearn - have an intense feeling of longing or desire 52. Zenith - the highest point or peak 53. Abscond - to leave hurriedly and secretly, typically to avoid detection or arrest 54. Bombastic - high-sounding but with little meaning; inflated 55. Cantankerous - bad-tempered, argumentative, and uncooperative 56. Diatribe - a forceful and bitter verbal attack against someone or something 57. Effervescent - bubbly, lively, or enthusiastic 58. Fervent - having or displaying a passionate intensity 59. Gregarious - fond of company; sociable 60. Harangue - a lengthy and aggressive speech or lecture 61. Ineffable - too great or extreme to be expressed or described in words 62. Juxtaposition - the fact of two things being seen or placed close together for contrasting effect 63. Kindle - to ignite or arouse a feeling 64. Laconic - using very few words; concise 65. Mellifluous - pleasing to the ear; melodious 66. Nefarious - wicked, villainous, or criminal 67. Obfuscate - to render unclear, confusing, or difficult to understand 68. Pernicious - having a harmful effect, especially in a gradual or subtle way 69. Quixotic - exceedingly idealistic, unrealistic, and impractical 70. Reticent - not revealing one's thoughts or feelings readily 71. Superfluous - unnecessary, especially through being more than enough 72. Taciturn - reserved or uncommunicative in speech; saying little 73. Ubiquitous - present, appearing, or found everywhere 74. Vex - to make someone feel annoyed, frustrated, or worried 75. Wane - to decrease gradually in size, intensity, or power 76. Xenophile - a person who is attracted to foreign cultures or people 77. Yield - to produce or provide; give way to pressure or force 78. Zealous - having or showing great energy or enthusiasm in pursuit of a cause or objective 79. Abrogate - to repeal or do away with 80. Belligerence - aggressive or warlike behavior 81. Cacophonous - involving or producing a harsh, discordant mixture of sounds 82. Deleterious - causing harm or damage 83. Egregious - outstandingly bad or shocking 84. Facetious - treating serious issues with inappropriate humor 85. Garrulous - excessively talkative, especially on trivial matters 86. Harrowing - extremely distressing or disturbing 87. Immutable - unchanging over time; unable to be changed 88. Juxtaposition - the fact of two things being seen or placed close together for contrasting effect 89. Kowtow - to act in an excessively subservient manner 90. Lucid - expressed clearly; easy to understand 91. Malinger - to pretend to be ill, injured, or otherwise unable to work as an excuse to avoid duty or work 92. Nebulous - unclear, vague, or hazy 93. Obsequious - overly obedient or attentive in a servile manner 94. Parsimonious - unwilling to spend money or use resources; stingy or frugal 95. Quandary - a state of uncertainty or perplexity 96. Resilient - able to recover quickly from difficult conditions 97. Sycophant - a person who acts obsequiously towards someone important to gain advantage 98. Taciturn - reserved or uncommunicative in speech; saying little 99. Ubiquitous - present, appearing, or found everywhere 100. Vindictive - having or showing a strong desire for revenge