| malignant definitions |
| # | Definition | Sets |
| 1 | deadly, extremely harmful, evil; spiteful, malicious | 87 sets |
| 2 | cancerous | 69 sets |
| 3 | harmful | 34 sets |
| 4 | tending to cause death; highly injurious; aggressively malevolent; ex. malignant tumor | 30 sets |
| 5 | extremely malevolent or malicious | 27 sets |
| 6 | likely to cause death | 27 sets |
| 7 | (adj.) deadly, extremely harmful, evil; spiteful, malicious | 21 sets |
| 8 | evil in nature or tending to do great harm or mischief. | 21 sets |
| 9 | deadly | 21 sets |
| 10 | very harmful | 20 sets |
| 11 | dangerous to health | 20 sets |
| 12 | threatening to cause death | 20 sets |
| 13 | evil | 17 sets |
| 14 | adj. very harmful; threatening death; cancerous (of a tumor) | 15 sets |
| 15 | dangerous or harmful in influence or effect | 15 sets |
| 16 | harmful or cancerous | 14 sets |
| 17 | very harmful; threatening death; cancerous (of a tumor) | 12 sets |
| 18 | dangerous or evil | 12 sets |
| 19 | threatening to cause death; very evil | 12 sets |
| 20 | actively evil in nature | 12 sets |
| 21 | harmful; something bad enough that it could result in death when related to cancer | 11 sets |
| 22 | lethal, wicked | 11 sets |
| 23 | disposed to cause harm, suffering, or distress deliberately; feeling or showing ill will or hatred | 10 sets |
| 24 | injurious; tending to cause death; aggressively malevolent | 10 sets |
| 25 | disposed to cause harm, suffering, or distress deliberately; feeling or showing ill will or hatred. | 10 sets |
| 26 | (adj) deadly, extremely harmful, evil; spiteful, malicious | 10 sets |
| 27 | causing harm | 10 sets |
| 28 | evil in nature | 9 sets |
| 29 | dangerous; evil | 9 sets |
| 30 | deadly, extremely harmful, evil, spiteful, malicious | 9 sets |
| 31 | 1. threatening to cause death 2. very evil | 9 sets |
| 32 | dangerous | 8 sets |
| 33 | cancerous tumor | 8 sets |
| 34 | very dangerous or harmful in influence or effect | 8 sets |
| 35 | deadly, extremely harmful | 8 sets |
| 36 | becoming progressively worse | 8 sets |
| 37 | bad or harmful, producing death | 8 sets |
| 38 | adj. evil in nature or tending to do great harm or mischief. | 8 sets |
| 39 | extremely harmful | 7 sets |
| 40 | wholesome, beneficial, benign | 7 sets |