| No. | Term | Definition |
|---|---|---|
| 1. | Accede | Agree to a request |
| 2. | Accredit | Officially recognize as valid |
| 3. | Acknowledge | Recognize receipt or truth |
| 4. | Affirm | State as true |
| 5. | Affix seal | Seal to validate |
| 6. | Agree | Consent or concur |
| 7. | Approve | Give official acceptance |
| 8. | Assent | Express agreement |
| 9. | Assure | Give confidence or certainty |
| 10. | Attest | Bear witness to |
| 11. | Authenticate | Prove genuine or real |
| 12. | Authorize | Grant permission or power |
| 13. | Back up | Support with evidence |
| 14. | Bear out | Show to be true |
| 15. | Bless | Give approval or sanction |
| 16. | Book | Reserve and secure |
| 17. | Certify | Formally declare true |
| 18. | Check | Verify by examination |
| 19. | Clear | Approve as acceptable |
| 20. | Co-sign | Sign jointly to validate |
| 21. | Collaborate | Work together in support |
| 22. | Concede | Admit as true |
| 23. | Concur | Agree in opinion |
| 24. | Corroborate | Confirm with supporting evidence |
| 25. | Countercheck | Verify by double-checking |
| 26. | Countersign | Sign in confirmation |
| 27. | Declare | State formally |
| 28. | Deem valid | Judge as acceptable |
| 29. | Demonstrate | Show clearly with proof |
| 30. | Designate | Officially appoint or name |
| 31. | Double-check | Check again for accuracy |
| 32. | Endorse | Approve or support publicly |
| 33. | Ensure | Make certain |
| 34. | Establish | Prove or set firmly |
| 35. | Evidence | Provide proof for |
| 36. | Examine | Inspect to verify |
| 37. | Finalize | Make final and official |
| 38. | Find true | Determine as correct |
| 39. | Formalize | Make official in form |
| 40. | Fortify | Strengthen with support |
| 41. | Give the nod | Signal approval |
| 42. | Green-light | Give permission to proceed |
| 43. | Guarantee | Promise with assurance |
| 44. | Handshake on it | Agree informally |
| 45. | Identify | Recognize as the same |
| 46. | Initial | Mark with initials to approve |
| 47. | Insure | Secure against loss |
| 48. | Judge correct | Decide as accurate |
| 49. | Justify | Show to be right |
| 50. | Knuckle down | Commit firmly to |
| 51. | Legitimize | Make lawful or acceptable |
| 52. | Lend support | Provide backing |
| 53. | Lock in | Secure as fixed |
| 54. | Maintain | Assert as continuing true |
| 55. | Make it official | Declare as official |
| 56. | Make sure | Ensure correctness |
| 57. | Nail down | Set firmly and precisely |
| 58. | Note receipt | Acknowledge receiving |
| 59. | Obtain assent | Get agreement |
| 60. | Offer assurance | Provide confidence |
| 61. | OK | Give approval |
| 62. | On record | Officially noted as true |
| 63. | Order confirmed | Acknowledge an order |
| 64. | Pass | Approve as acceptable |
| 65. | Pin down | Determine precisely |
| 66. | Pledge | Promise formally |
| 67. | Prove | Show as true |
| 68. | Put in writing | Document as agreed |
| 69. | Ratify | Formally approve a decision |
| 70. | Reaffirm | State again as true |
| 71. | Reassure | Restore confidence |
| 72. | Recheck | Check again |
| 73. | Recognize | Acknowledge as valid |
| 74. | Reconfirm | Confirm again |
| 75. | Record | Enter as official note |
| 76. | Reinforce | Strengthen by added support |
| 77. | Report verified | State as checked and true |
| 78. | Resolve | Decide firmly |
| 79. | Rubber-stamp | Approve routinely |
| 80. | Sanction | Authorize or approve officially |
| 81. | Seal | Close or mark as official |
| 82. | Secure | Make safe and certain |
| 83. | Settle | Decide or finalize |
| 84. | Sign and seal | Validate with signature and seal |
| 85. | Sign off | Give final approval |
| 86. | Stamp approved | Mark as accepted |
| 87. | Stand by | Support as true |
| 88. | State | Express in words |
| 89. | Substantiate | Support with evidence |
| 90. | Support | Back with reasons or proof |
| 91. | Sustain | Uphold as valid |
| 92. | Swear to | Promise under oath |
| 93. | Test | Try to verify |
| 94. | Tick the box | Mark as accepted |
| 95. | Validate | Check and accept as sound |
| 96. | Verify | Establish truth or accuracy |
| 97. | Vouch for | Assert reliability |
| 98. | Warrant | Guarantee as justified |
| 99. | Witness | Observe and attest |
| 100. | Write back | Reply to acknowledge |