| No. | Item | Definition |
|---|---|---|
| 1. | accepted | generally recognized as true |
| 2. | acknowledged | accepted as true or valid |
| 3. | affirmed | stated or confirmed as true |
| 4. | approved | officially accepted as satisfactory |
| 5. | ascertained | found out with certainty |
| 6. | attested | officially or clearly confirmed |
| 7. | audited | examined officially for accuracy |
| 8. | authenticated | shown to be genuine |
| 9. | battle-tested | tested in difficult conditions |
| 10. | borne out | shown to be true |
| 11. | certain | known for sure |
| 12. | certified | officially confirmed as meeting standards |
| 13. | checked out | found to be true |
| 14. | conclusive | decisive and leaving no doubt |
| 15. | confirmed | shown to be true |
| 16. | convincing | persuasive and believable |
| 17. | corroborated | supported by other evidence |
| 18. | credible | believable and convincing |
| 19. | data-backed | supported by data |
| 20. | decided | clearly determined or settled |
| 21. | defensible | able to be justified |
| 22. | definitive | final and authoritative |
| 23. | demonstrable | capable of being shown clearly |
| 24. | demonstrated | clearly shown by evidence |
| 25. | determined | firmly established by inquiry |
| 26. | documented | recorded with supporting evidence |
| 27. | effective | successful in producing results |
| 28. | efficacious | able to produce intended effect |
| 29. | established | firmly shown or accepted |
| 30. | evidence-based | based on reliable evidence |
| 31. | evidenced | shown by available evidence |
| 32. | evident | plainly seen or understood |
| 33. | examined | looked at carefully and confirmed |
| 34. | fact-checked | checked for factual accuracy |
| 35. | factual | based on actual facts |
| 36. | field-tested | tested in real conditions |
| 37. | firm | securely established |
| 38. | found | discovered or determined |
| 39. | grounded | based on facts or evidence |
| 40. | incontestable | not open to dispute |
| 41. | incontrovertible | impossible to deny or dispute |
| 42. | indisputable | unable to be denied |
| 43. | irrefutable | impossible to disprove |
| 44. | justified | shown to be reasonable |
| 45. | known | recognized as true or existing |
| 46. | legally established | recognized as valid by law |
| 47. | legitimate | genuine and valid |
| 48. | legitimated | made valid or accepted |
| 49. | made good | shown to be valid |
| 50. | made plain | made clear by evidence |
| 51. | manifest | clearly shown or displayed |
| 52. | manifested | shown clearly by evidence |
| 53. | nailed down | firmly established or confirmed |
| 54. | not in doubt | considered certainly true |
| 55. | obvious | easy to notice or understand |
| 56. | on record | officially documented or recorded |
| 57. | open-and-shut | clear beyond reasonable doubt |
| 58. | patent | obvious and unmistakable |
| 59. | pinned down | made exact and certain |
| 60. | plain | obvious and unmistakable |
| 61. | provable | capable of being shown true |
| 62. | proved true | shown to be true |
| 63. | recognized | officially or generally acknowledged |
| 64. | reconfirmed | confirmed again |
| 65. | reliable | dependably true or effective |
| 66. | repeatable | able to be reproduced consistently |
| 67. | replicable | able to be repeated successfully |
| 68. | reproducible | able to be duplicated reliably |
| 69. | research-backed | supported by research |
| 70. | resolved | firmly decided or answered |
| 71. | settled | decided or established |
| 72. | shown | made clear by evidence |
| 73. | solid | strong and dependable |
| 74. | sound | reliable and well founded |
| 75. | soundly based | based on strong support |
| 76. | stable | remaining reliable over time |
| 77. | substantiated | supported with evidence |
| 78. | supported | backed by evidence or facts |
| 79. | tenable | able to be defended |
| 80. | tested | checked by trial or examination |
| 81. | time-tested | proved over long use |
| 82. | tried-and-true | reliably effective over time |
| 83. | true | in accordance with fact |
| 84. | trustworthy | deserving confidence or belief |
| 85. | unassailable | not vulnerable to challenge |
| 86. | undeniable | clearly true or certain |
| 87. | upheld | shown valid after challenge |
| 88. | valid | logically or factually sound |
| 89. | validated | shown to be sound |
| 90. | verifiable | able to be checked as true |
| 91. | verified | confirmed as true or accurate |
| 92. | vetted | carefully checked and approved |
| 93. | viable | capable of working successfully |
| 94. | vouched for | personally confirmed as reliable |
| 95. | well attested | supported by many records |
| 96. | well documented | supported by ample records |
| 97. | well established | widely accepted as true |
| 98. | well supported | backed by strong evidence |
| 99. | well-founded | based on good reasons |
| 100. | workable | shown to work in practice |