| No. | Term | Definition |
|---|---|---|
| 1. | absent | not present |
| 2. | anonymous | without a known name |
| 3. | at the back | positioned behind others |
| 4. | behind closed doors | kept private |
| 5. | behind the scenes | not seen by the public |
| 6. | blocked | prevented from being seen |
| 7. | blotted out | made impossible to see |
| 8. | blurred | made less distinct |
| 9. | buried | put deep under something |
| 10. | cached | stored away for later |
| 11. | camouflaged | disguised to blend in |
| 12. | clandestine | kept secret, often illicit |
| 13. | cloaked | covered or concealed |
| 14. | concealed | kept out of sight |
| 15. | covered | placed under a covering |
| 16. | covert | not openly shown or done |
| 17. | deeply buried | hidden far beneath |
| 18. | dimmed | made less bright and visible |
| 19. | disguised | made to look different |
| 20. | dormant | inactive and not apparent |
| 21. | downplayed | made to seem less important |
| 22. | eclipsed | blocked from view |
| 23. | enigmatic | mysterious and hard to read |
| 24. | ensconced | settled securely and privately |
| 25. | fenced in | enclosed to keep unseen |
| 26. | furtive | secretive and avoiding attention |
| 27. | glossed over | treated to hide details |
| 28. | gone | no longer present or seen |
| 29. | hard to find | difficult to locate |
| 30. | held back | not disclosed |
| 31. | hooded | covered as with a hood |
| 32. | hushed up | kept quiet and secret |
| 33. | in back | located behind the front |
| 34. | in hiding | concealed to avoid discovery |
| 35. | in the rear | at the back, not visible |
| 36. | in the shadows | kept out of notice |
| 37. | in the underground | operating secretly |
| 38. | inaccessible | hard or impossible to reach |
| 39. | incognito | with identity concealed |
| 40. | invisible | unable to be seen |
| 41. | kept back | not revealed or shared |
| 42. | kept in reserve | held back for later |
| 43. | kept out of sight | not visible |
| 44. | kept quiet | not talked about |
| 45. | kept secret | not revealed |
| 46. | kept under wraps | kept secret |
| 47. | laid away | stored for future use |
| 48. | latent | present but not visible |
| 49. | locked away | secured out of reach |
| 50. | lost | unable to be found |
| 51. | lying low | keeping out of sight |
| 52. | masked | covered to hide identity |
| 53. | misplaced | put where it cannot be found |
| 54. | missing | not present or found |
| 55. | mysterious | hard to explain or know |
| 56. | nestled | set snugly in a place |
| 57. | not disclosed | not revealed |
| 58. | not evident | not clearly seen |
| 59. | not revealed | not made known |
| 60. | not visible | cannot be seen |
| 61. | obscured | made hard to see |
| 62. | off the radar | not noticed or tracked |
| 63. | out of sight | not visible |
| 64. | out of the limelight | not receiving attention |
| 65. | out of the public eye | not publicly visible |
| 66. | out of view | not in view |
| 67. | packed away | put away for storage |
| 68. | papered over | hidden by superficial fixes |
| 69. | private | not for public view |
| 70. | privileged | restricted to certain people |
| 71. | put aside | set aside and not shown |
| 72. | put away | stored out of sight |
| 73. | removed | taken away from view |
| 74. | restricted | limited to certain access |
| 75. | screened | shielded from view |
| 76. | secluded | kept away from others |
| 77. | secret | kept from being known |
| 78. | secreted | hidden away or stored |
| 79. | shielded | protected from being seen |
| 80. | shrouded | covered or wrapped from sight |
| 81. | shut away | kept in a closed place |
| 82. | sly | secretive and cunning |
| 83. | smuggled | brought in secretly |
| 84. | sneaky | secretive in a dishonest way |
| 85. | stashed | stored secretly |
| 86. | stealthy | quietly hidden or unnoticed |
| 87. | surreptitious | done secretly to avoid notice |
| 88. | tucked away | put in a hidden place |
| 89. | tucked out of sight | placed where it cannot be seen |
| 90. | under cover | concealed from view |
| 91. | under wraps | kept secret |
| 92. | undisclosed | not revealed or made known |
| 93. | unknown | not known to others |
| 94. | unnoticed | not observed or detected |
| 95. | unrevealed | not shown or made known |
| 96. | unseen | not seen or noticed |
| 97. | veiled | partly hidden from view |
| 98. | walled off | blocked by a wall |
| 99. | withheld | kept from being given |
| 100. | wrapped up | covered or kept secret |