| A | B |
| millennium | n a period of 1,000 years; a thousandth anniversary |
| mire | n marshy, mucky ground |
| mode | n method of doing; type; manner; fashion |
| modulate | v to reduce or regulate; to lessen the intensity of |
| momentum | n force of movement; speed; impetus |
| moratorium | n a suspension of activity; a period of delay |
| mores | n customary moral standards |
| motif | n a recurring theme or idea |
| motley | adj extremely varied or diverse; heterogeneous; multicolored |
| municipal | adj pertaining to a city (or town) and its government |
| muse | v to ponder; to meditate |
| muster | v to assemble for battle or inspection; to summon up |
| mystic | adj otherworldly; mysterious; enigmatic |