| No. | Item | Definition |
|---|---|---|
| 1. | abnormal | not normal; suspicious |
| 2. | alarming | causing concern or suspicion |
| 3. | ambiguous | having unclear meaning |
| 4. | anomalous | deviating from what is normal |
| 5. | backdoor | secret and improper |
| 6. | black-market | illegal and secretive |
| 7. | bogus | not genuine or truthful |
| 8. | brazen | boldly shameless or dishonest |
| 9. | cagey | careful and evasive |
| 10. | clandestine | kept secret, often suspiciously |
| 11. | cloak-and-dagger | secretive and suspicious |
| 12. | conniving | secretly plotting something wrong |
| 13. | corrupt | dishonest for personal gain |
| 14. | covert | hidden and secretive |
| 15. | crafty | clever in a deceitful way |
| 16. | crooked | dishonest or corrupt |
| 17. | crooky | dishonest-looking or shady |
| 18. | cunning | cleverly deceitful |
| 19. | deceitful | given to lying or trickery |
| 20. | deceptive | likely to mislead |
| 21. | devious | dishonest in a sneaky way |
| 22. | dishonest | not truthful or trustworthy |
| 23. | disingenuous | not candid or sincere |
| 24. | disreputable | not respectable or trustworthy |
| 25. | dodgy | seeming dishonest or unreliable |
| 26. | double-dealing | secretly dishonest |
| 27. | dubious | not to be trusted |
| 28. | duplicitous | deceitful in speech or action |
| 29. | enigmatic | hard to interpret; suspicious |
| 30. | equivocal | open to more than one meaning |
| 31. | evasive | avoiding direct answers |
| 32. | false | not true or genuine |
| 33. | far-fetched | hard to accept as true |
| 34. | fixed | dishonestly arranged beforehand |
| 35. | flaky | unreliable or odd |
| 36. | fraudulent | intended to deceive |
| 37. | fraudy | seeming like a scam |
| 38. | funny | odd or suspicious |
| 39. | furtive | secretive and suspicious |
| 40. | glib | smooth but untrustworthy |
| 41. | guileful | full of deceit |
| 42. | half-baked | poorly thought out |
| 43. | hazy | not clear or definite |
| 44. | hokey | fake or unbelievable |
| 45. | iffy | somewhat doubtful or uncertain |
| 46. | illegal | against the law |
| 47. | illicit | not legally permitted |
| 48. | implausible | hard to believe |
| 49. | improper | not appropriate or honest |
| 50. | inexplicable | hard to explain; suspicious |
| 51. | insincere | not genuinely honest |
| 52. | irregular | not normal or proper |
| 53. | janky | poorly made and suspect |
| 54. | manipulated | controlled unfairly or deceptively |
| 55. | mendacious | given to lying |
| 56. | misleading | giving a false impression |
| 57. | murky | unclear and suspicious |
| 58. | mysterious | difficult to understand or explain |
| 59. | not on the level | not honest or fair |
| 60. | not right | seeming wrong or suspicious |
| 61. | obscure | not clear or obvious |
| 62. | odd | strange in a suspicious way |
| 63. | off | not quite right |
| 64. | oily | smarmily insincere |
| 65. | opaque | hard to understand clearly |
| 66. | peculiar | odd in a suspicious way |
| 67. | phony | fake or insincere |
| 68. | questionable | open to doubt or suspicion |
| 69. | rigged | dishonestly arranged |
| 70. | scheming | making secret dishonest plans |
| 71. | shady | dishonest or untrustworthy |
| 72. | shifty | appearing deceitful or evasive |
| 73. | sketchy | seeming unsafe or dishonest |
| 74. | slippery | hard to pin down |
| 75. | sly | secretively cunning or deceitful |
| 76. | sneaky | secretive and dishonest |
| 77. | specious | seemingly true but false |
| 78. | spurious | false but appearing real |
| 79. | suspect | possibly dishonest or false |
| 80. | suspicious | seeming dishonest or questionable |
| 81. | tampered | secretly interfered with |
| 82. | tenuous | weak or doubtful |
| 83. | tricky | deceptive or hard to trust |
| 84. | troubling | causing worry or doubt |
| 85. | two-faced | insincere and deceitful |
| 86. | unbelievable | difficult to believe |
| 87. | uncertain | not clearly known or trusted |
| 88. | unclear | not clear or straightforward |
| 89. | unconvincing | not believable |
| 90. | under the table | done secretly and dishonestly |
| 91. | underhanded | secretly dishonest or unfair |
| 92. | unethical | not morally right |
| 93. | unsavory | morally unpleasant or suspect |
| 94. | untrustworthy | not deserving trust |
| 95. | vague | not clearly expressed |
| 96. | weird | strange and unsettling |
| 97. | wily | skilled at trickery |
| 98. | wonky | not working right; suspicious |
| 99. | worrying | causing concern or doubt |
| 100. | wrongful | unjust or dishonest |