| No. | Item | Definition |
|---|---|---|
| 1. | absurd | ridiculously unreasonable |
| 2. | apocryphal | of doubtful authenticity |
| 3. | baseless | without factual foundation |
| 4. | beyond belief | too extreme to believe |
| 5. | bizarre | very strange and unlikely |
| 6. | bogus | fake or untrue |
| 7. | cockamamie | ridiculous and unbelievable |
| 8. | conjectural | based on supposition |
| 9. | contrived | artificial and implausible |
| 10. | crackpot | foolishly unrealistic or bizarre |
| 11. | doubtful | unlikely or uncertain |
| 12. | dubious | doubtful or questionable |
| 13. | exaggerated | made to seem too extreme |
| 14. | extravagant | excessive or wildly unrealistic |
| 15. | fabricated | made up falsely |
| 16. | fake | not real or genuine |
| 17. | false | not true |
| 18. | fanciful | imaginative rather than realistic |
| 19. | fantastic | wildly unrealistic or improbable |
| 20. | feeble | weak and ineffective |
| 21. | fictional | not factual or real |
| 22. | fictitious | invented, not real |
| 23. | flimsy | weak and unsupported |
| 24. | forced | unnatural and unconvincing |
| 25. | groundless | having no real basis |
| 26. | hard to accept | difficult to believe or allow |
| 27. | hard to believe | difficult to accept as true |
| 28. | hard to credit | difficult to believe |
| 29. | hard to swallow | difficult to believe |
| 30. | harebrained | foolish and impractical |
| 31. | illogical | not following sound reasoning |
| 32. | imaginary | existing only in imagination |
| 33. | imagined | not real or factual |
| 34. | implausible | not seeming believable |
| 35. | improbable | not likely to happen |
| 36. | incredible | hard to believe |
| 37. | indefensible | impossible to justify |
| 38. | invalid | not logically sound |
| 39. | invented | created rather than factual |
| 40. | irrational | not based on reason |
| 41. | labored | awkwardly forced |
| 42. | laughable | too absurd to take seriously |
| 43. | ludicrous | laughably absurd |
| 44. | made-up | invented rather than true |
| 45. | mythical | legendary, not factual |
| 46. | nonsensical | making no sense |
| 47. | not believable | impossible to accept as true |
| 48. | not convincing | failing to persuade |
| 49. | not credible | not believable |
| 50. | not persuasive | not able to convince |
| 51. | not plausible | not seeming likely or true |
| 52. | not realistic | not based on reality |
| 53. | not tenable | not defensible or sustainable |
| 54. | off-the-wall | strange and implausible |
| 55. | outlandish | strange and hard to believe |
| 56. | outrageous | shockingly unreasonable or excessive |
| 57. | over-the-top | excessive and unrealistic |
| 58. | overblown | exaggerated beyond belief |
| 59. | overingenious | too clever to be convincing |
| 60. | overstated | expressed too strongly |
| 61. | overwrought | excessively elaborate or exaggerated |
| 62. | past belief | too unlikely to believe |
| 63. | peculiar | strange or questionable |
| 64. | phony | fake or not genuine |
| 65. | preposterous | absurdly unreasonable or unbelievable |
| 66. | questionable | open to doubt |
| 67. | remote | very unlikely |
| 68. | ridiculous | deserving disbelief or mockery |
| 69. | risible | absurd enough to provoke laughter |
| 70. | senseless | lacking sense or reason |
| 71. | shaky | weak or doubtful |
| 72. | slim | very small in likelihood |
| 73. | speculative | based on guesswork |
| 74. | spurious | false or not genuine |
| 75. | strained | forced and unconvincing |
| 76. | strange | unusual and not easily believed |
| 77. | suspect | not fully trustworthy |
| 78. | tenuous | weakly supported or connected |
| 79. | thin | weak and unconvincing |
| 80. | too absurd | too unreasonable to accept |
| 81. | too fanciful | too imaginative to believe |
| 82. | too fantastic | too unrealistic to believe |
| 83. | too improbable | too unlikely to accept |
| 84. | too unlikely | beyond reasonable probability |
| 85. | tortured | strained and unnatural |
| 86. | unbelievable | too unlikely to accept |
| 87. | unconvincing | not persuasive or believable |
| 88. | unfounded | not based on facts |
| 89. | unlikely | not expected to be true |
| 90. | unproven | not shown to be true |
| 91. | unrealistic | not based on reality |
| 92. | unreasonable | not sensible or fair |
| 93. | unsubstantiated | not supported by evidence |
| 94. | unsupported | lacking evidence or backing |
| 95. | untenable | not defensible or believable |
| 96. | wacky | silly and unbelievable |
| 97. | way-out | unusual and hard to believe |
| 98. | weak | not convincing or credible |
| 99. | weird | strange and hard to accept |
| 100. | wild | extremely unlikely or unrealistic |