| No. | Item | Definition |
|---|---|---|
| 1. | accept | regard as valid or satisfactory |
| 2. | accord with | be consistent with |
| 3. | acknowledge | recognize as true or valid |
| 4. | affirm | state or uphold as true |
| 5. | approve | accept as satisfactory or valid |
| 6. | ascertain | find out for certain |
| 7. | attest | declare to be true |
| 8. | audit | inspect to confirm accuracy |
| 9. | authenticate | prove genuine or valid |
| 10. | authorize | give official approval for |
| 11. | aver | state confidently as true |
| 12. | back up | support with evidence |
| 13. | bear out | show to be true |
| 14. | bolster | support more strongly |
| 15. | buttress | support solidly |
| 16. | certify | officially confirm as true |
| 17. | check against | compare to verify |
| 18. | check as valid | test for validity |
| 19. | check out | prove satisfactory or true |
| 20. | check over | inspect for correctness |
| 21. | clear | approve as acceptable |
| 22. | confirm | establish as true or correct |
| 23. | corroborate | support with confirming evidence |
| 24. | countersign | sign to confirm validity |
| 25. | cross-check | verify by comparison |
| 26. | declare | state formally as true |
| 27. | demonstrate | clearly show as true |
| 28. | determine | establish by investigation |
| 29. | document | provide records proving something |
| 30. | double-check | check again for accuracy |
| 31. | endorse | publicly support or approve |
| 32. | establish | prove or confirm firmly |
| 33. | evaluate | judge validity or worth |
| 34. | evidence | show proof of |
| 35. | examine | look into carefully |
| 36. | fact-check | verify factual accuracy |
| 37. | fix | settle firmly |
| 38. | formalize | make official or valid |
| 39. | give credence to | accept as believable |
| 40. | give the go-ahead | officially approve proceeding |
| 41. | green-light | give approval to proceed |
| 42. | ground | base on evidence |
| 43. | hold up | remain valid under scrutiny |
| 44. | hold water | seem logical and sound |
| 45. | inspect | look over to verify |
| 46. | judge | form an opinion on |
| 47. | justify | show to be right |
| 48. | legalize | make officially valid |
| 49. | legitimate | show to be lawful |
| 50. | legitimize | make acceptable or lawful |
| 51. | lend support to | help confirm |
| 52. | lock in | secure as confirmed |
| 53. | maintain | assert as true |
| 54. | make sense | appear reasonable and true |
| 55. | match | correspond and confirm |
| 56. | meet | satisfy a requirement |
| 57. | nail down | establish firmly |
| 58. | notarize | officially certify by notary |
| 59. | okay | approve as acceptable |
| 60. | pass | judge as acceptable |
| 61. | pin down | determine exactly |
| 62. | profess | claim openly |
| 63. | prove | show to be true |
| 64. | qualify | meet required conditions |
| 65. | ratify | formally approve or confirm |
| 66. | reassure | confirm to ease doubt |
| 67. | recognize | accept as valid |
| 68. | reconfirm | confirm again |
| 69. | register | officially record as valid |
| 70. | regularize | make formally valid |
| 71. | reinforce | strengthen support for |
| 72. | resolve | determine with certainty |
| 73. | reverify | verify again |
| 74. | ring true | seem truthful or genuine |
| 75. | rubber-stamp | approve automatically |
| 76. | screen | examine for acceptability |
| 77. | seal | make official or binding |
| 78. | settle | resolve as certain |
| 79. | show | make clear as true |
| 80. | sign off on | formally approve |
| 81. | square with | agree with the facts |
| 82. | stand behind | support as sound or true |
| 83. | stand up | prove sound under scrutiny |
| 84. | substantiate | provide evidence for |
| 85. | support | give evidence for |
| 86. | sustain | support as valid |
| 87. | swear to | declare as true formally |
| 88. | test | examine to confirm validity |
| 89. | testify to | state evidence for |
| 90. | triangulate | confirm using multiple sources |
| 91. | trust | accept as reliable or true |
| 92. | underpin | provide strong support for |
| 93. | uphold | confirm or support as valid |
| 94. | verify | check that it is true |
| 95. | vet | carefully check suitability |
| 96. | vindicate | show to be justified |
| 97. | vouch for | personally confirm reliability |
| 98. | warrant | justify or support |
| 99. | warranted | justified by the facts |
| 100. | witness | attest from direct knowledge |