| No. | Item | Definition |
|---|---|---|
| 1. | annoying | causing irritation or trouble |
| 2. | arduous | very difficult and tiring |
| 3. | awkward | hard to manage smoothly |
| 4. | baffling | very hard to understand |
| 5. | barbed | sharply hurtful or pointed |
| 6. | bewildering | very confusing |
| 7. | bothersome | causing annoyance or trouble |
| 8. | burdensome | hard to bear or manage |
| 9. | byzantine | highly complex and intricate |
| 10. | capricious | changing suddenly and unpredictably |
| 11. | challenging | demanding effort or skill |
| 12. | complex | not simple or straightforward |
| 13. | complicated | having many confusing parts |
| 14. | confusing | hard to understand clearly |
| 15. | contrary | opposing what is expected |
| 16. | convoluted | extremely twisted or complex |
| 17. | critical | dangerously important or delicate |
| 18. | dangerous | likely to cause harm |
| 19. | deceptive | misleading in appearance |
| 20. | delicate | requiring careful handling |
| 21. | demanding | needing much skill or effort |
| 22. | devious | not straightforward; underhanded |
| 23. | dicey | risky or uncertain |
| 24. | difficult | hard to do or handle |
| 25. | elusive | hard to catch or grasp |
| 26. | enigmatic | hard to interpret or understand |
| 27. | entangled | caught in complications |
| 28. | evasive | avoiding direct answers |
| 29. | exacting | requiring great care or effort |
| 30. | facile | superficially easy or neat |
| 31. | fiddly | awkwardly detailed to handle |
| 32. | finicky | very particular and hard to please |
| 33. | fishy | seeming dishonest or suspicious |
| 34. | fraught | full of problems or risks |
| 35. | full of pitfalls | containing many hidden problems |
| 36. | fussy | hard to satisfy or manage |
| 37. | glib | smooth but shallow |
| 38. | gnarled | twisted and difficult |
| 39. | hair-splitting | overly fine and difficult |
| 40. | hairy | dangerously difficult or risky |
| 41. | hard | not easy to do |
| 42. | hazardous | involving danger or risk |
| 43. | iffy | uncertain or doubtful |
| 44. | indirect | not direct or plain |
| 45. | intricate | having many detailed parts |
| 46. | involved | complicated and not simple |
| 47. | irksome | annoying and troublesome |
| 48. | knotty | complex and hard to solve |
| 49. | labyrinthine | very complicated and confusing |
| 50. | loaded | having hidden implications |
| 51. | mean | difficult or inconvenient |
| 52. | messy | complicated and hard to sort |
| 53. | misleading | giving a false impression |
| 54. | muddled | confused and disordered |
| 55. | murky | unclear and hard to judge |
| 56. | mystifying | making understanding difficult |
| 57. | nasty | difficult and unpleasant |
| 58. | nerve-racking | causing stress and difficulty |
| 59. | nettlesome | causing irritation or difficulty |
| 60. | not easy | difficult in a general way |
| 61. | not straightforward | not simple or direct |
| 62. | obscure | not clear or obvious |
| 63. | onerous | involving heavy difficulty |
| 64. | opaque | hard to understand |
| 65. | ornery | bad-tempered and difficult |
| 66. | perplexing | confusing and hard to understand |
| 67. | perverse | deliberately difficult or unreasonable |
| 68. | precarious | not secure or stable |
| 69. | problem-ridden | full of difficulties |
| 70. | problematic | causing difficulty or trouble |
| 71. | puzzling | causing uncertainty or confusion |
| 72. | questionable | open to doubt |
| 73. | refractory | stubbornly hard to manage |
| 74. | risky | involving possible harm |
| 75. | rough | difficult or unpleasant |
| 76. | roundabout | not direct or straightforward |
| 77. | sensitive | requiring tact and care |
| 78. | shaky | not firm or reliable |
| 79. | slippery | hard to pin down |
| 80. | snarled | tangled and difficult to resolve |
| 81. | specious | seeming true but false |
| 82. | sticky | difficult to deal with |
| 83. | subtle | not obvious or simple |
| 84. | tangled | confusedly twisted together |
| 85. | taxing | requiring much effort |
| 86. | thorny | difficult and sensitive |
| 87. | ticklish | hard to handle safely |
| 88. | touchy | easily causing trouble |
| 89. | tough | hard to do |
| 90. | treacherous | dangerously deceptive or unstable |
| 91. | trying | hard to endure |
| 92. | uncertain | not predictable or sure |
| 93. | unclear | not easy to understand |
| 94. | unpredictable | not behaving as expected |
| 95. | unruly | hard to control |
| 96. | unsound | not reliable or valid |
| 97. | unstable | not steady or secure |
| 98. | vexing | causing annoyance and difficulty |
| 99. | volatile | likely to change suddenly |
| 100. | wayward | hard to control or predict |