| No. | Item | Definition |
|---|---|---|
| 1. | abnormal | not usual or expected |
| 2. | alarming | causing concern or fear |
| 3. | ambiguous | open to more than one meaning |
| 4. | amiss | wrong or out of order |
| 5. | anomalous | deviating from what is normal |
| 6. | bogus | not genuine or legitimate |
| 7. | cagey | careful and unwilling to reveal |
| 8. | clandestine | kept secret, often illegally |
| 9. | cloak-and-dagger | secretive and intrigue-filled |
| 10. | compromised | made doubtful or unreliable |
| 11. | conniving | secretly cooperating in wrongdoing |
| 12. | counterfeit | made to deceive as genuine |
| 13. | covert | hidden and not openly shown |
| 14. | criminal | involving crime or wrongdoing |
| 15. | crooked | dishonest or corrupt |
| 16. | cynical | distrustful of motives or sincerity |
| 17. | deceptive | likely to mislead |
| 18. | devious | dishonest in a sneaky way |
| 19. | dishonest | not truthful or trustworthy |
| 20. | disingenuous | not candid or sincere |
| 21. | distrustful | full of distrust |
| 22. | dodgy | seeming dishonest or unsafe |
| 23. | double-dealing | dishonest in dealings |
| 24. | doubtful | not convinced or trusting |
| 25. | dubious | hesitant to believe or trust |
| 26. | duplicitous | deceitful and double-dealing |
| 27. | enigmatic | hard to understand or read |
| 28. | equivocal | unclear or intentionally vague |
| 29. | erratic | unpredictable and inconsistent |
| 30. | evasive | avoiding direct answers |
| 31. | fake | not real or honest |
| 32. | far-fetched | unlikely and hard to believe |
| 33. | fishy | seeming dishonest or wrong |
| 34. | flimsy | weak and not convincing |
| 35. | foreboding | suggesting coming trouble |
| 36. | fraudulent | intended to deceive |
| 37. | funny | odd in a questionable way |
| 38. | furtive | secretive and sneaky |
| 39. | guarded | careful and not fully trusting |
| 40. | hard to swallow | difficult to believe |
| 41. | hazy | unclear and uncertain |
| 42. | iffy | uncertain or questionable |
| 43. | implausible | hard to believe |
| 44. | improbable | not likely to be true |
| 45. | improper | not suitable or acceptable |
| 46. | incongruous | not fitting the situation |
| 47. | inconsistent | not matching other facts |
| 48. | incredible | difficult to believe |
| 49. | incredulous | unwilling to believe |
| 50. | insincere | not expressing true feelings |
| 51. | irregular | not normal or expected |
| 52. | leery | cautious and distrustful |
| 53. | misleading | giving a false impression |
| 54. | mistrustful | not inclined to trust |
| 55. | mistrusting | feeling distrust toward something |
| 56. | murky | unclear and possibly dishonest |
| 57. | mysterious | hard to explain or know |
| 58. | not aboveboard | not honest or open |
| 59. | not right | seeming wrong or suspicious |
| 60. | odd | strange in a concerning way |
| 61. | off | not quite right |
| 62. | ominous | suggesting something bad ahead |
| 63. | out of line | improper or questionable |
| 64. | out of place | not fitting the setting |
| 65. | paranoid | overly distrustful or fearful |
| 66. | peculiar | unusual in a doubtful way |
| 67. | phony | fake and not genuine |
| 68. | plotting | secretly planning something harmful |
| 69. | questionable | open to doubt or suspicion |
| 70. | questioning | showing doubt or uncertainty |
| 71. | red-flagged | marked as potentially problematic |
| 72. | secretive | hiding intentions or information |
| 73. | shady | seeming dishonest or questionable |
| 74. | shifty | appearing deceitful or evasive |
| 75. | sinister | suggesting evil or harm |
| 76. | skeptical | doubting something is true |
| 77. | sly | secretive and tricky |
| 78. | sneaky | secretive and dishonest |
| 79. | strange | unusual and possibly concerning |
| 80. | surreptitious | kept secret, especially improperly |
| 81. | suspect | not to be trusted |
| 82. | tainted | damaged by dishonesty or doubt |
| 83. | tenuous | weak and doubtful |
| 84. | treacherous | dangerous and not trustworthy |
| 85. | troubling | causing concern or suspicion |
| 86. | two-faced | insincere and deceitful |
| 87. | unbelievable | hard to accept as true |
| 88. | uncanny | strangely unsettling |
| 89. | uncertain | not sure or convinced |
| 90. | unconvincing | not believable or persuasive |
| 91. | underhanded | secretly dishonest or unfair |
| 92. | uneasy | feeling concern or doubt |
| 93. | unnerving | making people uneasy or wary |
| 94. | unsettling | making one feel uneasy |
| 95. | untoward | unexpected and inappropriate |
| 96. | untrustworthy | not deserving trust |
| 97. | volatile | likely to change dangerously |
| 98. | wary | careful because of possible danger |
| 99. | weird | strange in a concerning way |
| 100. | worrisome | causing concern or doubt |