| No. | Item | Definition |
|---|---|---|
| 1. | abrasive | harshly damaging or irritating |
| 2. | abusive | cruel and damaging |
| 3. | addictive | causing dependency |
| 4. | adverse | unfavorable and harmful |
| 5. | aggressive | forceful in a harmful way |
| 6. | antagonistic | actively opposed and harmful |
| 7. | baleful | threatening harm; destructive |
| 8. | baneful | causing ruin or harm |
| 9. | blasting | severely damaging or ruining |
| 10. | blighting | causing ruin or decay |
| 11. | brutal | savagely harsh and harmful |
| 12. | burdensome | causing harmful strain |
| 13. | calamitous | bringing disaster or misery |
| 14. | catastrophic | causing enormous damage |
| 15. | caustic | able to burn or wound |
| 16. | contaminating | making something impure or unsafe |
| 17. | corrosive | gradually damaging or eroding |
| 18. | corrupting | causing moral decline |
| 19. | crippling | severely damaging or limiting |
| 20. | cruel | causing pain without concern |
| 21. | damaging | causing physical or other damage |
| 22. | dangerous | likely to cause harm |
| 23. | deadly | able to cause death |
| 24. | debilitating | weakening and harmful |
| 25. | degrading | damaging quality or dignity |
| 26. | deleterious | harmful in effect |
| 27. | destructive | causing great damage |
| 28. | detrimental | tending to cause harm |
| 29. | erosive | gradually wearing away |
| 30. | evil | morally bad and harmful |
| 31. | exhausting | draining energy severely |
| 32. | exploitative | unfairly using others harmfully |
| 33. | fatal | causing death or disaster |
| 34. | foul | offensive, dirty, or harmful |
| 35. | grave | serious and harmful |
| 36. | harsh | severe and damaging |
| 37. | hazardous | involving risk of harm |
| 38. | high-risk | likely to cause harm |
| 39. | hostile | unfriendly and potentially harmful |
| 40. | ill | bad or harmful |
| 41. | impairing | damaging normal function |
| 42. | inflammatory | causing anger or bodily inflammation |
| 43. | injurious | causing injury or damage |
| 44. | insidious | harmful in a subtle way |
| 45. | irritating | causing annoyance or inflammation |
| 46. | lethal | sufficient to cause death |
| 47. | life-threatening | likely to cause death |
| 48. | maiming | causing serious injury |
| 49. | malevolent | having harmful intent |
| 50. | malicious | intending to cause harm |
| 51. | malignant | very harmful or malevolent |
| 52. | menacing | suggesting likely harm |
| 53. | mind-altering | changing mental state harmfully |
| 54. | mischievous | causing minor trouble or harm |
| 55. | negative | harmful in effect |
| 56. | noxious | physically harmful or poisonous |
| 57. | onerous | oppressively difficult and damaging |
| 58. | oppressive | cruelly burdensome and harmful |
| 59. | painful | causing physical or emotional pain |
| 60. | perilous | full of danger |
| 61. | pernicious | very harmful, often gradually |
| 62. | poisoning | causing toxic effects |
| 63. | poisonous | containing or causing poison |
| 64. | polluting | causing environmental damage |
| 65. | predatory | seeking advantage in harmful ways |
| 66. | reckless | carelessly risking harm |
| 67. | risky | involving possible harm |
| 68. | ruining | causing complete damage |
| 69. | ruinous | causing severe damage or loss |
| 70. | sabotaging | deliberately damaging progress |
| 71. | sapping | gradually draining strength |
| 72. | serious | significantly harmful or risky |
| 73. | severe | very serious or harmful |
| 74. | sinister | suggesting evil or harm |
| 75. | straining | putting damaging pressure on |
| 76. | stressful | causing harmful stress |
| 77. | subversive | undermining in a harmful way |
| 78. | tainting | spoiling by harmful influence |
| 79. | taxing | causing harmful strain |
| 80. | threatening | indicating possible harm |
| 81. | toxic | poisonous or very damaging |
| 82. | traumatic | causing severe distress or injury |
| 83. | treacherous | dangerously unstable or deceptive |
| 84. | troubling | causing concern or distress |
| 85. | undermining | weakening in a harmful way |
| 86. | unfit | not suitable; potentially harmful |
| 87. | unhealthy | damaging to health |
| 88. | unsafe | not safe; likely harmful |
| 89. | unwholesome | not healthy or beneficial |
| 90. | upsetting | causing emotional distress |
| 91. | venomous | injecting poison; harmful |
| 92. | vicious | deliberately cruel or violent |
| 93. | vindictive | seeking revenge harmfully |
| 94. | violent | using physical force harmfully |
| 95. | virulent | extremely harmful or severe |
| 96. | vitiating | spoiling or impairing quality |
| 97. | weakening | making less strong or effective |
| 98. | withering | severely damaging or weakening |
| 99. | wounding | causing injury or pain |
| 100. | wrecking | causing destruction or failure |