| No. | Term | Definition |
|---|---|---|
| 1. | Aloof | Distant; not openly engaged. |
| 2. | Anonymous | Without a revealed identity. |
| 3. | Apart | Separate from others. |
| 4. | Arcane | Known by few; obscure. |
| 5. | Background | Out of public attention. |
| 6. | Backroom | Away from public view. |
| 7. | Behind closed doors | Not open to the public. |
| 8. | Between friends | Shared only among trusted friends. |
| 9. | By invitation | Entry allowed only by invite. |
| 10. | Classified | Officially restricted information. |
| 11. | Cloistered | Secluded from society. |
| 12. | Close-hold | Kept tightly guarded. |
| 13. | Closed | Not accessible to outsiders. |
| 14. | Closed-session | Meeting not open to observers. |
| 15. | Company-confidential | Restricted to company insiders. |
| 16. | Confidential | Meant to be kept secret. |
| 17. | Covert | Hidden; secretive. |
| 18. | Cryptic | Hard to understand; concealed. |
| 19. | Discreet | Careful to avoid attention. |
| 20. | Discreetly held | Conducted without publicity. |
| 21. | Do not disclose | Instruction not to reveal information. |
| 22. | Domestic | Within the home; not public. |
| 23. | Exclusive | Limited to select people. |
| 24. | Eye-only | For designated viewers only. |
| 25. | Eyes-only | Restricted to specific viewers. |
| 26. | Family-only | Restricted to family members. |
| 27. | For internal use | Not intended for outsiders. |
| 28. | For your eyes only | For you alone to see. |
| 29. | Held in reserve | Kept back for later. |
| 30. | Hidden | Concealed from view. |
| 31. | Hushed | Quiet; not openly discussed. |
| 32. | In camera | Heard in closed session. |
| 33. | In confidence | Shared with expectation of secrecy. |
| 34. | In private quarters | In personal living space. |
| 35. | In-house | Within an organization; internal. |
| 36. | Individual | Pertaining to one person. |
| 37. | Inner-circle | Limited to a select group. |
| 38. | Insular | Isolated from outside influence. |
| 39. | Internal | Within an organization; not public. |
| 40. | Intimate | Very personal; close. |
| 41. | Inward | Directed toward oneself. |
| 42. | Jealously guarded | Protected from others’ access. |
| 43. | Just between us | Not to be shared widely. |
| 44. | Keep it quiet | Do not tell others. |
| 45. | Known only to few | Limited awareness among people. |
| 46. | Lone | Without others present. |
| 47. | Low-profile | Avoiding public attention. |
| 48. | Masked | Concealed; not revealed. |
| 49. | Members-only | Restricted to members. |
| 50. | Monastic | Secluded, like a monastery. |
| 51. | Mysterious | Not fully revealed; secretive. |
| 52. | Need-to-know | Shared only when necessary. |
| 53. | Nondisclosed | Not made known publicly. |
| 54. | Nonpublic | Not open to the public. |
| 55. | Not for circulation | Not to be distributed. |
| 56. | Not for release | Not authorized for publication. |
| 57. | Not for sharing | Not to be passed on. |
| 58. | Not open to public | Closed to general access. |
| 59. | Off the record | Not for publication or attribution. |
| 60. | On the down-low | Kept secret; low visibility. |
| 61. | One-on-one | Between two people only. |
| 62. | One-person | For a single individual. |
| 63. | Opaque | Not transparent; hard to see. |
| 64. | Out of sight | Not visible to others. |
| 65. | Personal | Belonging to an individual. |
| 66. | Personal-only | For oneself; not shared. |
| 67. | Privileged | Restricted access; protected. |
| 68. | Proprietary | Owned; not freely shared. |
| 69. | Protected | Kept safe from access. |
| 70. | Quiet | Not publicized; subdued. |
| 71. | Reclusive | Avoiding others; withdrawn. |
| 72. | Reserved | Restrained; not openly shared. |
| 73. | Restricted | Limited access permitted. |
| 74. | Retiring | Shy; avoiding attention. |
| 75. | Retreat-like | Secluded, away from bustle. |
| 76. | Secluded | Set apart; isolated. |
| 77. | Secret | Intentionally kept hidden. |
| 78. | Sequestered | Kept away from others. |
| 79. | Shrouded | Covered; kept from view. |
| 80. | Silent | Not spoken of publicly. |
| 81. | Solo | Done by one person. |
| 82. | Stealth | Done secretly and quietly. |
| 83. | Stowed away | Hidden from easy discovery. |
| 84. | Strictly confidential | Highly restricted; secret. |
| 85. | Sub rosa | In secret; confidentially. |
| 86. | Tacit | Understood without being stated. |
| 87. | Top secret | Highest level of secrecy. |
| 88. | Under wraps | Kept secret; not disclosed. |
| 89. | Underground | Hidden from public knowledge. |
| 90. | Undisclosed | Not revealed or made known. |
| 91. | Unlisted | Not publicly recorded or advertised. |
| 92. | Unpublicized | Not announced to the public. |
| 93. | Unshared | Kept to oneself. |
| 94. | Veil of silence | Intentional refusal to disclose. |
| 95. | Veiled | Partly hidden or obscured. |
| 96. | Veiled in secrecy | Hidden behind secrecy. |
| 97. | Verified-only | Accessible only to verified users. |
| 98. | Withdrawn | Not sociable; kept to oneself. |
| 99. | Withheld | Kept back from disclosure. |
| 100. | Within four walls | Kept inside; not shared. |
