| No. | Item | Definition |
|---|---|---|
| 1. | artful | cleverly deceptive |
| 2. | backdoor | indirect and secretive |
| 3. | backhanded | indirect and often deceitful |
| 4. | behind-the-scenes | done secretly out of view |
| 5. | by stealth | using secrecy and concealment |
| 6. | cagey | careful and secretive |
| 7. | camouflaged | hidden by disguise |
| 8. | clandestine | kept secret and concealed |
| 9. | cloak-and-dagger | secretive and intrigue-filled |
| 10. | concealed | deliberately kept from view |
| 11. | conniving | secretly plotting something improper |
| 12. | covert | hidden and secret |
| 13. | crafty | clever in a dishonest way |
| 14. | crooked | dishonest or corrupt |
| 15. | cunning | skilled at deceit |
| 16. | dark | secretive or sinister |
| 17. | deceitful | given to lying or trickery |
| 18. | deceptive | misleading by appearance or action |
| 19. | devious | dishonest in a secretive way |
| 20. | discreet | careful to avoid attention |
| 21. | dissembling | hiding true motives or feelings |
| 22. | dodgy | seemingly dishonest or tricky |
| 23. | double-dealing | dishonest in dealings |
| 24. | dubious | not to be trusted |
| 25. | duplicitous | deceitful and two-faced |
| 26. | evasive | avoiding direct answers or action |
| 27. | false | deceitful or insincere |
| 28. | fishy | seemingly suspicious or dishonest |
| 29. | foxlike | sly and cunning |
| 30. | foxy | cunning and sly |
| 31. | fraudulent | dishonest and intended to deceive |
| 32. | full of guile | very deceitful |
| 33. | furtive | done secretly to avoid notice |
| 34. | glib | smooth but insincere |
| 35. | guarded | careful not to reveal much |
| 36. | guileful | full of deceit |
| 37. | hidden | kept out of sight |
| 38. | hush-hush | very secret and concealed |
| 39. | ill-intentioned | having bad hidden motives |
| 40. | in secret | hidden from others |
| 41. | incognito | with identity concealed |
| 42. | indirect | not straightforward or open |
| 43. | insidious | harmful in a subtle way |
| 44. | intriguing | secretly scheming |
| 45. | knowing | showing secret awareness |
| 46. | low-key | kept quiet and understated |
| 47. | Machiavellian | cunning, scheming, and unscrupulous |
| 48. | manipulative | controlling others unfairly |
| 49. | masked | concealed from view |
| 50. | misleading | causing wrong impressions |
| 51. | murky | unclear and suspicious |
| 52. | oblique | indirect and not explicit |
| 53. | off-the-record | not for public disclosure |
| 54. | oily | smarmily insincere |
| 55. | on the quiet | kept secret and discreet |
| 56. | on the sly | secretly and discreetly |
| 57. | on the sneak | secretly and slyly |
| 58. | opportunistic | taking selfish advantage |
| 59. | perfidious | treacherous and deceitful |
| 60. | plotting | secretly planning something |
| 61. | predatory | seeking unfair advantage |
| 62. | questionable | possibly dishonest or improper |
| 63. | quietly dishonest | dishonest in a subtle way |
| 64. | ratlike | treacherous and furtive |
| 65. | reticent | not revealing thoughts readily |
| 66. | roundabout | not direct or straightforward |
| 67. | scheming | making secret dishonest plans |
| 68. | secret | kept hidden from others |
| 69. | secretive | inclined to hide intentions |
| 70. | shadowy | mysterious and secretive |
| 71. | shady | seemingly dishonest or suspicious |
| 72. | shifty | appearing dishonest or evasive |
| 73. | sinister | suggesting hidden evil |
| 74. | slick | smoothly deceptive |
| 75. | slimy | dishonest and unpleasant |
| 76. | sly | secretly clever and deceitful |
| 77. | smooth | subtly persuasive or deceptive |
| 78. | sneaking | acting in a secretive way |
| 79. | sneakish | behaving like a sneak |
| 80. | stealth | secretive and quiet |
| 81. | stealthy | moving or acting secretly |
| 82. | surreptitious | kept secret, especially improperly |
| 83. | thieving | inclined to steal secretly |
| 84. | tight-lipped | unwilling to reveal information |
| 85. | treacherous | betraying trust secretly |
| 86. | tricksterish | like a sly trickster |
| 87. | tricksy | playfully sly or deceptive |
| 88. | tricky | deceptive or hard to detect |
| 89. | two-faced | insincere and deceitful |
| 90. | under-the-table | secret and improper |
| 91. | undercover | working secretly |
| 92. | underhanded | dishonest and secretive |
| 93. | unscrupulous | without moral principles |
| 94. | untrustworthy | not reliable or honest |
| 95. | up to no good | doing something suspicious |
| 96. | veiled | partly hidden or disguised |
| 97. | vulpine | foxlike and crafty |
| 98. | weaselly | sly and evasive |
| 99. | wily | skilled at tricking others |
| 100. | wormy | sneakily unpleasant |