| lurid | Gruesomely vivid; presenting shocking details in a sensational way | |
| macabre | Disturbing and horrifying because of involvement with or depiction of death and injury | |
| macerate | To soften or break down (food) into a pulpy mass, usually by soaking in a liquid | |
| machination | A scheme or plot, especially one intended to achieve an evil or treacherous end | |
| maelstrom | A powerful whirlpool in the sea or a river | |
| magisterial | Having or showing great authority | |
| magnanimous | Generous or forgiving, especially towards a rival or less powerful person | |
| magnate | A wealthy and influential person, especially in business | |
| makeshift | A temporary substitute or device | |
| malfeasance | The performance by a public official of an act that is legally unjustified, harmful, or contrary to law. | |