| A | B |
| maelstrom | a destructive whirlpool which rapidly sucks in objects |
| magnanimous | noble, generous |
| malediction | a curse |
| malevolent | wanting harm to befall others |
| manifold | diverse, varied |
| maudlin | weakly sentimental |
| mawkish | characterized by sick sentimentality |
| mendacious | having a lying, false character |
| mercurial | characterized by rapid change or temperamentality |
| modicum | a small amount of something |
| morass | a wet swampy bog; figuratively, something that traps and confuses |
| multifarious | having great diversity or variety |
| munificence | generosity in giving |
| myriad | consisting of a very great number |