100+ advanced British English words

1. **Ephemeral:** Lasting for a very short time. 2. **Ubiquitous:** Present, appearing, or found everywhere. 3. **Quixotic:** Extremely idealistic, unrealistic, and impractical. 4. **Mellifluous:** Sweet or musical; pleasant to hear. 5. **Sycophant:** A person who acts obsequiously towards someone important to gain advantage. 6. **Ineffable:** Too great or extreme to be expressed or described in words. 7. **Pernicious:** Having a harmful effect, especially in a gradual or subtle way. 8. **Sanguine:** Optimistic, especially in difficult situations. 9. **Serendipity:** The occurrence and development of events by chance in a happy or beneficial way. 10. **Quintessential:** Representing the most perfect or typical example of a quality or class. 11. **Munificent:** More generous than is usual or necessary. 12. **Voracious:** Wanting or devouring great quantities of food; having a very eager approach to a particular activity. 13. **Exacerbate:** Make (a problem, bad situation, or negative feeling) worse. 14. **Ostentatious:** Characterized by vulgar or pretentious display; designed to impress or attract notice. 15. **Cacophony:** A harsh, discordant mixture of sounds. 16. **Prolific:** (of a plant, animal, or person) Producing much fruit or foliage or many offspring. 17. **Insidious:** Proceeding in a gradual, subtle way, but with harmful effects. 18. **Perfidious:** Deceitful and untrustworthy. 19. **Recalcitrant:** Having an obstinately uncooperative attitude towards authority or discipline. 20. **Sycophantic:** Behaving or done in an obsequious way in order to gain advantage. 21. **Ephemeral:** Lasting for a very short time. 22. **Circumlocution:** The use of many words where fewer would do, especially in a deliberate attempt to be vague or evasive. 23. **Propinquity:** The state of being close to someone or something; proximity. 24. **Sycophantic:** Attempting to win favor from influential people through flattery. 25. **Ineffable:** Too great or extreme to be expressed or described in words. 26. **Serendipity:** The occurrence and development of events by chance in a happy or beneficial way. 27. **Quintessential:** Representing the most perfect or typical example of a quality or class. 28. **Munificent:** More generous than is usual or necessary. 29. **Voracious:** Wanting or devouring great quantities of food; having a very eager approach to a particular activity. 30. **Exacerbate:** Make (a problem, bad situation, or negative feeling) worse. 31. **Ostentatious:** Characterized by vulgar or pretentious display; designed to impress or attract notice. 32. **Cacophony:** A harsh, discordant mixture of sounds. 33. **Prolific:** (of a plant, animal, or person) Producing much fruit or foliage or many offspring. 34. **Insidious:** Proceeding in a gradual, subtle way, but with harmful effects. 35. **Perfidious:** Deceitful and untrustworthy. 36. **Recalcitrant:** Having an obstinately uncooperative attitude towards authority or discipline. 37. **Sycophantic:** Behaving or done in an obsequious way in order to gain advantage. 38. **Obfuscate:** Render obscure, unclear, or unintelligible. 39. **Soporific:** Tending to induce drowsiness or sleep. 40. **Cacophony:** A harsh, discordant mixture of sounds. 41. **Incandescent:** Emitting light as a result of being heated; passionate or brilliant. 42. **Ineffable:** Too great or extreme to be expressed or described in words. 43. **Lethargic:** Affected by lethargy; sluggish and apathetic. 44. **Recalcitrant:** Having an obstinately uncooperative attitude towards authority or discipline. 45. **Inscrutable:** Impossible to understand or interpret. 46. **Sycophantic:** Attempting to win favor from influential people through flattery. 47. **Pernicious:** Having a harmful effect, especially in a gradual or subtle way. 48. **Ephemeral:** Lasting for a very short time. 49. **Disparate:** Essentially different in kind; not allowing comparison. 50. **Quixotic:** Extremely idealistic, unrealistic, and impractical. 51. **Mellifluous:** Sweet or musical; pleasant to hear. 52. **Ubiquitous:** Present, appearing, or found everywhere. 53. **Incandescent:** Emitting light as a result of being heated; passionate or brilliant. 54. **Voracious:** Wanting or devouring great quantities of food; having a very eager approach to a particular activity. 55. **Insidious:** Proceeding in a gradual, subtle way, but with harmful effects. 56. **Sycophantic:** Behaving or done in an obsequious way in order to gain advantage. 57. **Ineffable:** Too great or extreme to be expressed or described in words. 58. **Recalcitrant:** Having an obstinately uncooperative attitude towards authority or discipline. 59. **Pernicious:** Having a harmful effect, especially in a gradual or subtle way. 60. **Serendipity:** The occurrence and development of events by chance in a happy or beneficial way. 61. **Ephemeral:** Lasting for a very short time. 62. **Circumlocution:** The use of many words where fewer would do, especially in a deliberate attempt to be vague or evasive. 63. **Propinquity:** The state of being close to someone or something; proximity. 64. **Sycophantic:** Attempting to win favor from influential people through flattery. 65. **Ineffable:** Too great or extreme to be expressed or described in words. 66. **Serendipity:** The occurrence and development of events by chance in a happy or beneficial way. 67. **Quintessential:** Representing the most perfect or typical example of a quality or class. 68. **Munificent:** More generous than is usual or necessary. 69. **Voracious:** Wanting or devouring great quantities of food; having a very eager approach to a particular activity. 70. **Exacerbate:** Make (a problem, bad situation, or negative feeling) worse. 71. **Ostentatious:** Characterized by vulgar or pretentious display; designed to impress or attract notice. 72. **Cacophony:** A harsh, discordant mixture of sounds. 73. **Prolific:** (of a plant, animal, or person) Producing much fruit or foliage or many offspring. 74. **Insidious:** Proceeding in a gradual, subtle way, but with harmful effects. 75. **Perfidious:** Deceitful and untrustworthy. 76. **Recalcitrant:** Having an obstinately uncooperative attitude towards authority or discipline. 77. **Sycophantic:** Behaving or done in an obsequious way in order to gain advantage. 78. **Obfuscate:** Render obscure, unclear, or unintelligible. 79. **Soporific:** Tending to induce drowsiness or sleep. 80. **Cacophony:** A harsh, discordant mixture of sounds. 81. **Incandescent:** Emitting light as a result of being heated; passionate or brilliant. 82. **Ineffable:** Too great or extreme to be expressed or described in words. 83. **Lethargic:** Affected by lethargy; sluggish and apathetic. 84. **Recalcitrant:** Having an obstinately uncooperative attitude towards authority or discipline. 85. **Inscrutable:** Impossible to understand or interpret. 86. **Sycophantic:** Attempting to win favor from influential people through flattery. 87. **Pernicious:** Having a harmful effect, especially in a gradual or subtle way. 88. **Ephemeral:** Lasting for a very short time. 89. **Disparate:** Essentially different in kind; not allowing comparison. 90. **Quixotic:** Extremely idealistic, unrealistic, and impractical. 91. **Mellifluous:** Sweet or musical; pleasant to hear. 92. **Ubiquitous:** Present, appearing, or found everywhere. 93. **Incandescent:** Emitting light as a result of being heated; passionate or brilliant. 94. **Voracious:** Wanting or devouring great quantities of food; having a very eager approach to a particular activity. 95. **Insidious:** Proceeding in a gradual, subtle way, but with harmful effects. 96. **Sycophantic:** Behaving or done in an obsequious way in order to gain advantage. 97. **Ineffable:** Too great or extreme to be expressed or described in words. 98. **Recalcitrant:** Having an obstinately uncooperative attitude towards authority or discipline. 99. **Pernicious:** Having a harmful effect, especially in a gradual or subtle way. 100. **Serendipity:** The occurrence and development of events by chance in a happy or beneficial way.