| No. | Item | Definition |
|---|---|---|
| 1. | agile | able to move quickly |
| 2. | ambiguous | having more than one meaning |
| 3. | amorphous | without clear shape or form |
| 4. | barely perceptible | almost impossible to notice |
| 5. | beyond capture | unable to be caught |
| 6. | beyond comprehension | too hard to understand |
| 7. | beyond grasp | impossible to understand or seize |
| 8. | beyond reach | too far to obtain |
| 9. | blurred | not clear or distinct |
| 10. | cagey | careful to avoid giving information |
| 11. | capricious | changing suddenly without reason |
| 12. | changeable | likely to change often |
| 13. | concealed | kept from being seen |
| 14. | covert | hidden and secret |
| 15. | cryptic | having a hidden meaning |
| 16. | darting | moving suddenly and quickly |
| 17. | distant | far away and hard to reach |
| 18. | enigmatic | mysterious and hard to interpret |
| 19. | ephemeral | lasting for a very short time |
| 20. | escaping capture | avoiding being caught |
| 21. | escaping definition | resisting clear description |
| 22. | escaping notice | avoiding being noticed |
| 23. | escaping understanding | resisting comprehension |
| 24. | ethereal | delicate and hard to perceive |
| 25. | evasive | avoiding direct response or capture |
| 26. | faint | barely noticeable |
| 27. | fast-moving | moving too quickly to catch |
| 28. | fickle | changing often and unpredictably |
| 29. | fleet | fast and light in movement |
| 30. | fleeting | lasting only a short time |
| 31. | flighty | unsteady and hard to rely on |
| 32. | fluid | not fixed or stable |
| 33. | fugitive | constantly moving away or escaping |
| 34. | ghostly | vague and hard to perceive |
| 35. | hard to attain | difficult to achieve |
| 36. | hard to catch | difficult to capture |
| 37. | hard to detect | difficult to notice or discover |
| 38. | hard to find | difficult to locate |
| 39. | hard to grasp | difficult to understand or seize |
| 40. | hard to identify | difficult to recognize clearly |
| 41. | hard to pin down | difficult to define exactly |
| 42. | hard to track | difficult to follow or locate |
| 43. | hazy | unclear or vague |
| 44. | hidden | kept out of sight |
| 45. | illusive | deceptive or unreal |
| 46. | impenetrable | impossible to understand or enter |
| 47. | imperceptible | too slight to notice |
| 48. | inaccessible | difficult to reach or obtain |
| 49. | indefinable | hard to describe clearly |
| 50. | indistinct | not clear or sharply defined |
| 51. | inscrutable | impossible to understand fully |
| 52. | insubstantial | lacking solid form or reality |
| 53. | invisible | unable to be seen |
| 54. | mercurial | changing quickly and unpredictably |
| 55. | murky | dark, obscure, or unclear |
| 56. | mutable | liable to change |
| 57. | mysterious | difficult to understand or explain |
| 58. | nebulous | hazy and not clearly defined |
| 59. | nimble | quick and hard to catch |
| 60. | nomadic | moving from place to place |
| 61. | obscure | not clear or easy to understand |
| 62. | out of reach | impossible to obtain |
| 63. | phantom | seeming real but not solid |
| 64. | quick | moving too fast to catch |
| 65. | rare | not often found |
| 66. | receding | moving farther away |
| 67. | reclusive | avoiding company or attention |
| 68. | remote | far away or isolated |
| 69. | retreating | moving back and away |
| 70. | roving | moving from place to place |
| 71. | shadowy | dim, vague, or hard to identify |
| 72. | shifting | constantly changing position or form |
| 73. | skittish | easily frightened and hard to approach |
| 74. | slippery | hard to catch or grasp |
| 75. | slipping away | moving beyond reach |
| 76. | slipping through fingers | hard to hold onto |
| 77. | stealthy | quietly avoiding notice |
| 78. | subtle | hard to notice or grasp |
| 79. | swift | moving very quickly |
| 80. | tenuous | weak, thin, or slight |
| 81. | transient | passing quickly; not lasting |
| 82. | tricky | difficult to deal with |
| 83. | unattainable | impossible to reach or achieve |
| 84. | uncatchable | impossible to catch |
| 85. | unclear | not easy to understand |
| 86. | undetectable | impossible to notice or discover |
| 87. | unfindable | impossible to locate |
| 88. | ungraspable | too difficult to comprehend |
| 89. | unidentifiable | impossible to identify |
| 90. | unlocatable | unable to be located |
| 91. | unreachable | unable to be reached |
| 92. | untraceable | impossible to track |
| 93. | vague | not clearly expressed or defined |
| 94. | vanishing | disappearing quickly from view |
| 95. | variable | not consistent or fixed |
| 96. | veiled | partly hidden or concealed |
| 97. | volatile | changing quickly and unpredictably |
| 98. | wandering | moving without fixed direction |
| 99. | will-o’-the-wisp | something hard to find or grasp |
| 100. | wily | skilled at avoiding capture |
