| A | B |
| machination | (noun) an evil design or plan |
| macroscopic | (adj.) visible to the naked eye |
| maelstrom | (noun) whirlpool, turbulence; agitated state of mind |
| malapropism | (noun) a word humorously misused |
| malleable | (adj.) capable of being changed; easily shaped |
| martinet | (noun) a strict disciplinarian; taskmaster |
| masochist | (noun) one who enjoys his or her own pain and suffering |
| mendacious | (adj.) lying; false, deceitful |
| meretricious | (adj.) attractive in a cheap, flashy way |
| milieu | (noun) environment, setting |
| miscreant | (noun) a vicious person |
| nebulous | (adj.) hazy, vague, uncertain |
| necromancy | (noun) magic, especially that practiced by a witch |
| neologism | (noun) use a new word; making up a new word or definition |
| nihilism | (noun) a total rejection of established laws |