| No. | Term | Definition |
|---|---|---|
| 1. | Abnormal | Not typical; deviating from normal. |
| 2. | Atypical | Not representative; unusual. |
| 3. | Bizarre | Strikingly odd or unexpected. |
| 4. | Choice | Of superior quality; select. |
| 5. | Conspicuous | Easily noticed; stands out. |
| 6. | Curious | Unusual; arousing interest. |
| 7. | Distinctive | Clearly different; characteristic. |
| 8. | Eccentric | Unconventional; slightly strange. |
| 9. | Elusive | Hard to find or capture. |
| 10. | Exceptional | Unusually good; uncommon. |
| 11. | Exotic | Strikingly unfamiliar; foreign. |
| 12. | Extraordinary | Very unusual; remarkable. |
| 13. | Fabled | Legendary; celebrated in stories. |
| 14. | Few and far between | Occurring infrequently; scarce. |
| 15. | Freakish | Abnormally strange; uncanny. |
| 16. | Genuine | Authentic; not common imitation. |
| 17. | Hard-to-come-by | Difficult to obtain; scarce. |
| 18. | Hidden | Concealed; not easily seen. |
| 19. | Highly unusual | Very uncommon; atypical. |
| 20. | Infrequent | Not occurring often. |
| 21. | Inimitable | Impossible to copy; unique. |
| 22. | Irregular | Not following a usual pattern. |
| 23. | Isolated | Separated; occurring alone. |
| 24. | Jammy | Unusually fortunate; lucky. |
| 25. | Jealously guarded | Kept secret; not widely available. |
| 26. | Limited | Restricted in amount or access. |
| 27. | Little-known | Not widely recognized. |
| 28. | Lone | Single; without others. |
| 29. | Low-frequency | Happening at a low rate. |
| 30. | Marked | Noticeably different; pronounced. |
| 31. | Meritorious | Deserving praise; uncommon excellence. |
| 32. | Niche | Specialized; for a small group. |
| 33. | Nonstandard | Not conforming to usual norms. |
| 34. | Not often seen | Uncommon to encounter. |
| 35. | Notorious | Widely known for something unusual. |
| 36. | Odd | Strange; different from expected. |
| 37. | One in a million | Extremely unlikely; very uncommon. |
| 38. | One-off | Made once; not repeated. |
| 39. | Only | Sole; without others like it. |
| 40. | Out-of-the-way | Remote; not often visited. |
| 41. | Outlier | Something far from the norm. |
| 42. | Particular | Distinct; specific and unusual. |
| 43. | Peculiar | Strange; distinctive. |
| 44. | Premium | High-grade; not commonly available. |
| 45. | Priceless | Too valuable to measure. |
| 46. | Privileged | Available to a select few. |
| 47. | Quaint | Charming in an unusual way. |
| 48. | Questionable | Doubtful; not typical. |
| 49. | Recondite | Little known; obscure. |
| 50. | Remarkable | Worthy of notice; unusual. |
| 51. | Remote | Far off; seldom reached. |
| 52. | Restricted | Limited by rules or access. |
| 53. | Rivetingly unusual | Strikingly uncommon; compelling. |
| 54. | Rummy | Odd; slightly strange. |
| 55. | Scarce | In short supply; uncommon. |
| 56. | Scarcely found | Hardly ever encountered. |
| 57. | Seldom | Not often; infrequently. |
| 58. | Select | Chosen; limited and high-quality. |
| 59. | Singular | Unique; highly unusual. |
| 60. | Sporadic | Occurring irregularly; scattered. |
| 61. | Strange | Unfamiliar; unexpected. |
| 62. | Surprising | Causing unexpected wonder. |
| 63. | Unaccustomed | Not usual; unfamiliar. |
| 64. | Uncommon | Not often found; unusual. |
| 65. | Unconventional | Not following common practice. |
| 66. | Undiscovered | Not yet found or known. |
| 67. | Unexpected | Not anticipated; surprising. |
| 68. | Unfamiliar | Not known from experience. |
| 69. | Unheard-of | Previously unknown; extraordinary. |
| 70. | Unlikely | Not probable; improbable. |
| 71. | Unobtainable | Not able to be acquired. |
| 72. | Unprecedented | Never done or known before. |
| 73. | Unrepeatable | Not able to happen again. |
| 74. | Unusual | Not typical; uncommon. |
| 75. | Unwonted | Not usual; uncommon. |
| 76. | Vanishing | Becoming scarce; disappearing. |
| 77. | Venerable | Highly respected; uncommon age. |
| 78. | Very scarce | In extremely short supply. |
| 79. | Very uncommon | Notably infrequent; unusual. |
| 80. | Vintage | From an earlier time; prized. |
| 81. | Wacky | Comically odd; quirky. |
| 82. | Way out | Very strange; unconventional. |
| 83. | Weird | Strange; not normal. |
| 84. | Well-nigh impossible | Almost impossible; exceedingly unlikely. |
| 85. | Whimsical | Playfully unusual; fanciful. |
| 86. | Wild | Uncontrolled; unusually extreme. |
| 87. | Xenial | Friendly to guests; uncommon term. |
| 88. | Xenodochial | Hospitable to strangers. |
| 89. | Xenogenic | Originating from outside; foreign. |
| 90. | Xenolithic | Containing foreign rock fragments. |
| 91. | Xeric | Very dry; desertlike. |
| 92. | Xerothermic | Hot and dry; arid-climate. |
| 93. | Xiphoid | Sword-shaped; uncommon anatomical term. |
| 94. | Xylophagous | Feeding on wood; uncommon. |
| 95. | Xylophonic | Resembling a xylophone sound. |
| 96. | Yare | Quick; nimble; archaic. |
| 97. | Yawning gap | Striking absence; notable lack. |
| 98. | Yearly | Happening once per year. |
| 99. | Yearned-for | Long desired; hard to obtain. |
| 100. | Yellowed | Aged; showing time’s effects. |