| No. | Item | Definition |
|---|---|---|
| 1. | alleged | claimed but not proven |
| 2. | ambiguous | having more than one meaning |
| 3. | ambivalent | having mixed feelings |
| 4. | blurred | lacking clear definition |
| 5. | blurry | not clear or distinct |
| 6. | capricious | changing suddenly without reason |
| 7. | chancy | dependent on chance |
| 8. | changeable | likely to alter |
| 9. | cloudy | unclear or confused |
| 10. | conditional | dependent on conditions |
| 11. | conflicted | having opposing feelings |
| 12. | conjectural | based on inference, not proof |
| 13. | contingent | dependent on something uncertain |
| 14. | debatable | open to argument or doubt |
| 15. | dicey | risky or uncertain |
| 16. | disputable | able to be questioned |
| 17. | dithering | unable to decide promptly |
| 18. | doubtful | not feeling or inspiring certainty |
| 19. | dubious | doubtful or suspect |
| 20. | equivocal | unclear or open to interpretation |
| 21. | erratic | irregular and unpredictable |
| 22. | experimental | not yet proven or final |
| 23. | faltering | moving or speaking uncertainly |
| 24. | fickle | likely to change unexpectedly |
| 25. | fluctuating | rising and falling unpredictably |
| 26. | fluid | not fixed; able to change |
| 27. | fuzzy | not clear or exact |
| 28. | halting | hesitant and uneven |
| 29. | hard to say | difficult to determine |
| 30. | hazy | not clear in mind or detail |
| 31. | hesitant | slow because of uncertainty |
| 32. | hesitating | pausing because unsure |
| 33. | hypothetical | assumed rather than certain |
| 34. | iffy | doubtful or uncertain |
| 35. | ill-defined | not clearly described |
| 36. | imprecise | not exact or definite |
| 37. | in doubt | not certain or decided |
| 38. | inconclusive | not proving anything definite |
| 39. | inconstant | not steady or dependable |
| 40. | indefinite | not fixed or clearly defined |
| 41. | indeterminate | not exactly known or fixed |
| 42. | insecure | not safe or certain |
| 43. | irregular | not following a predictable pattern |
| 44. | leery | cautious because doubtful |
| 45. | mercurial | changing quickly and unpredictably |
| 46. | misty | unclear or indistinct |
| 47. | murky | unclear or difficult to understand |
| 48. | not certain | lacking definite knowledge |
| 49. | not clear | not easy to understand |
| 50. | not confirmed | not officially verified |
| 51. | not definite | not firmly decided |
| 52. | not final | subject to further change |
| 53. | not fixed | not firmly established |
| 54. | not known | lacking known facts |
| 55. | not proven | not shown to be true |
| 56. | not settled | not yet resolved |
| 57. | not sure | lacking certainty |
| 58. | obscure | not clear or well known |
| 59. | opaque | hard to understand |
| 60. | open | not yet decided |
| 61. | pending | awaiting a decision |
| 62. | precarious | dangerously insecure or uncertain |
| 63. | presumed | believed without full proof |
| 64. | provisional | temporary until confirmed |
| 65. | provisory | temporary and conditional |
| 66. | putative | generally supposed, not proven |
| 67. | questionable | open to doubt or challenge |
| 68. | reported | stated but not confirmed |
| 69. | rumored | said without confirmation |
| 70. | shaky | not firm or reliable |
| 71. | shifting | changing and not fixed |
| 72. | skeptical | inclined to doubt |
| 73. | speculative | based on guesswork |
| 74. | subject to change | not final or fixed |
| 75. | supposed | assumed but not certain |
| 76. | tentative | not final or fully certain |
| 77. | tenuous | weak or uncertain |
| 78. | theoretical | possible but not proven |
| 79. | torn | unable to choose between options |
| 80. | touch-and-go | critically uncertain |
| 81. | unclear | not clear or definite |
| 82. | unconfirmed | not yet verified as true |
| 83. | undecided | not yet decided |
| 84. | unfinalized | not made final |
| 85. | unfixed | not firmly set |
| 86. | unknown | not known or established |
| 87. | unpredictable | not possible to foresee |
| 88. | unresolved | not settled or answered |
| 89. | unsettled | not resolved or stable |
| 90. | unspecified | not stated exactly |
| 91. | unstable | not steady or secure |
| 92. | unsure | not confident or sure |
| 93. | up in the air | not yet settled |
| 94. | vacillating | shifting between decisions |
| 95. | vague | not clear or precise |
| 96. | variable | likely to change |
| 97. | volatile | liable to sudden change |
| 98. | wary | careful because unsure |
| 99. | wavering | hesitating between choices |
| 100. | wobbly | unsteady or doubtful |