| No. | Item | Definition |
|---|---|---|
| 1. | alleged | claimed but not proven |
| 2. | ambiguous | having more than one meaning |
| 3. | apparent | seeming rather than certain |
| 4. | arguable | open to reasonable disagreement |
| 5. | baseless | without supporting evidence |
| 6. | bogus | not genuine or true |
| 7. | borderline | only just acceptable |
| 8. | cloudy | unclear or confused |
| 9. | compromised | made suspect or weakened |
| 10. | conjectural | based on guesswork |
| 11. | contestable | able to be challenged |
| 12. | curious | strange or hard to explain |
| 13. | debatable | open to discussion or doubt |
| 14. | deceptive | misleading by appearance |
| 15. | defective | imperfect or flawed |
| 16. | dicey | risky or uncertain |
| 17. | disconcerting | causing unease or doubt |
| 18. | disputable | open to argument or doubt |
| 19. | doubtful | unlikely or uncertain |
| 20. | dubitable | able to be doubted |
| 21. | enigmatic | mysterious and hard to interpret |
| 22. | equivocal | open to more than one meaning |
| 23. | equivocating | using unclear language to avoid |
| 24. | evasive | avoiding clear answers |
| 25. | false | not true or correct |
| 26. | far-fetched | hard to believe as true |
| 27. | faulty | containing mistakes or weaknesses |
| 28. | fishy | seeming dishonest or suspicious |
| 29. | flawed | having a weakness or defect |
| 30. | flimsy | weak and unconvincing |
| 31. | foggy | not clear or certain |
| 32. | fraudulent | intended to deceive |
| 33. | groundless | without basis or evidence |
| 34. | hard to accept | not easy to believe |
| 35. | hard to credit | difficult to believe true |
| 36. | hard to swallow | difficult to believe |
| 37. | hazy | not clear or definite |
| 38. | iffy | uncertain or doubtful |
| 39. | implausible | hard to believe |
| 40. | in question | under doubt or dispute |
| 41. | inconclusive | not leading to a clear result |
| 42. | indefinite | not exact or clear |
| 43. | indeterminate | not exactly known |
| 44. | insecure | not firm or certain |
| 45. | janky | poorly made or unreliable |
| 46. | marginal | barely adequate or convincing |
| 47. | misleading | giving a wrong impression |
| 48. | muddy | not clear or definite |
| 49. | murky | unclear or suspicious |
| 50. | mysterious | difficult to explain or understand |
| 51. | not aboveboard | not open and honest |
| 52. | not believable | hard to accept as true |
| 53. | not convincing | failing to persuade |
| 54. | not credible | not believable or convincing |
| 55. | not dependable | not reliable |
| 56. | not reliable | unable to be trusted |
| 57. | not right | seeming wrong or suspicious |
| 58. | not sound | not reliable or solid |
| 59. | not trustworthy | not deserving confidence |
| 60. | obscure | not clear or well known |
| 61. | odd | strange or questionable |
| 62. | off | not quite right |
| 63. | on shaky ground | not well supported |
| 64. | on thin ice | in a risky position |
| 65. | open to doubt | not fully certain |
| 66. | open to question | not certain or accepted |
| 67. | ostensible | appearing to be true |
| 68. | patchy | uneven and unreliable |
| 69. | peculiar | unusual in a suspicious way |
| 70. | precarious | not securely based |
| 71. | problematic | causing doubt or difficulty |
| 72. | putative | generally assumed to be |
| 73. | queer | strange or suspicious |
| 74. | questionable | open to doubt or suspicion |
| 75. | rum | odd or suspicious |
| 76. | shadowy | vague or suspicious |
| 77. | shady | slightly dishonest or suspicious |
| 78. | shaky | weak or not dependable |
| 79. | specious | seeming true but false |
| 80. | spurious | false but appearing genuine |
| 81. | strange | unusual or suspicious |
| 82. | suspect | possibly dishonest or unreliable |
| 83. | suspicious | causing mistrust or doubt |
| 84. | tainted | damaged by suspicion or wrongdoing |
| 85. | tentative | not fully worked out |
| 86. | tenuous | very weak or slight |
| 87. | thin | lacking support or substance |
| 88. | uncertain | not clearly known or decided |
| 89. | unconvincing | not persuasive or believable |
| 90. | undependable | not reliable |
| 91. | unlikely | not probable |
| 92. | unreliable | not dependable or trustworthy |
| 93. | unsettled | not resolved or certain |
| 94. | unsound | not based on reason |
| 95. | unstable | likely to change or fail |
| 96. | untrustworthy | not deserving trust |
| 97. | up in the air | still undecided or uncertain |
| 98. | vague | not clearly expressed |
| 99. | weak | not strong or convincing |
| 100. | wonky | not working correctly or reliably |