| No. | Item | Definition |
|---|---|---|
| 1. | acute | severe and urgent |
| 2. | adverse | unfavorable and possibly harmful |
| 3. | alarming | causing fear or concern |
| 4. | at risk | in danger of harm |
| 5. | bankrupting | causing financial ruin |
| 6. | blind | done without full information |
| 7. | bumpy | uneven and uncertain |
| 8. | calamitous | bringing great damage or misery |
| 9. | catastrophic | causing great damage or loss |
| 10. | chancy | depending on uncertain luck |
| 11. | contagious | spread by contact |
| 12. | corrosive | able to damage by chemical action |
| 13. | critical | dangerously serious or unstable |
| 14. | damaging | causing harm or injury |
| 15. | dangerous | likely to cause harm |
| 16. | deadly | able to cause death |
| 17. | deteriorating | becoming worse over time |
| 18. | dicey | likely to go badly |
| 19. | dire | extremely serious or urgent |
| 20. | disastrous | very harmful or unsuccessful |
| 21. | dodgy | risky or unreliable |
| 22. | endangered | seriously at risk |
| 23. | escalating | growing more serious |
| 24. | experimental | still being tested |
| 25. | explosive | liable to explode violently |
| 26. | exposed | left unprotected from danger |
| 27. | fatal | causing death or disaster |
| 28. | faulty | not working correctly or safely |
| 29. | flammable | easily set on fire |
| 30. | fraught | filled with danger or trouble |
| 31. | grave | seriously bad or dangerous |
| 32. | hairy | dangerous or difficult |
| 33. | hanging by a thread | barely secure or safe |
| 34. | harmful | causing damage or injury |
| 35. | hazardous | full of potential danger |
| 36. | high-stakes | involving serious possible loss |
| 37. | iffy | doubtful or uncertain |
| 38. | ill-equipped | lacking needed tools or skills |
| 39. | imminent | about to happen soon |
| 40. | infectious | able to spread disease |
| 41. | injurious | causing harm or damage |
| 42. | insecure | not safe or protected |
| 43. | jeopardized | put in danger |
| 44. | legally risky | likely to cause legal trouble |
| 45. | lethal | sufficient to cause death |
| 46. | liable | likely to experience something bad |
| 47. | life-threatening | likely to cause death |
| 48. | looming | appearing likely very soon |
| 49. | loss-making | producing financial losses |
| 50. | malignant | dangerously harmful or worsening |
| 51. | menacing | appearing likely to cause harm |
| 52. | mortal | causing death |
| 53. | mounting | increasing in seriousness |
| 54. | ominous | suggesting future danger |
| 55. | on the line | at stake or in danger |
| 56. | on thin ice | in a risky position |
| 57. | outgunned | having less force or power |
| 58. | outmatched | facing stronger opposition |
| 59. | overdue | late and potentially problematic |
| 60. | overextended | stretched beyond safe limits |
| 61. | overloaded | burdened beyond capacity |
| 62. | pathogenic | capable of causing disease |
| 63. | pending | about to happen or decided |
| 64. | perilous | very dangerous or risky |
| 65. | poisonous | capable of causing poisoning |
| 66. | precarious | not securely safe or stable |
| 67. | prone | likely to suffer something |
| 68. | radioactive | emitting harmful radiation |
| 69. | recessionary | causing economic decline |
| 70. | risky | involving possible loss or harm |
| 71. | rocky | full of difficulties or danger |
| 72. | rough | difficult and potentially unsafe |
| 73. | ruinous | causing severe damage or loss |
| 74. | shaky | weak, uncertain, or unstable |
| 75. | sinister | suggesting evil or danger |
| 76. | slippery | hard to control safely |
| 77. | speculative | based on uncertain outcomes |
| 78. | stormy | troubled and potentially dangerous |
| 79. | strained | under pressure and unstable |
| 80. | sudden | happening without warning |
| 81. | tenuous | weak or uncertain |
| 82. | threatening | suggesting possible harm |
| 83. | ticklish | hard to manage safely |
| 84. | touch-and-go | very uncertain or unstable |
| 85. | toxic | poisonous or harmful |
| 86. | treacherous | dangerous in a deceptive way |
| 87. | tricky | difficult and risky to handle |
| 88. | uncertain | not known or assured |
| 89. | unknown | not known or understood |
| 90. | unpredictable | hard to foresee accurately |
| 91. | unproven | not yet shown reliable |
| 92. | unsafe | not free from danger |
| 93. | unstable | likely to change badly |
| 94. | untested | not tried before |
| 95. | untried | not previously attempted |
| 96. | virulent | extremely harmful or severe |
| 97. | volatile | liable to sudden change |
| 98. | wobbly | unstable and insecure |
| 99. | worrying | causing concern about harm |
| 100. | worsening | becoming more harmful |
