| A | B |
| mandatory | adjective; required; obligatory |
| mannerism | noun; a distinctive personal trait; an idiosyncrasy; an exaggerated or unnatural style or habit, as in speech or dress |
| martial | adjective; military; suggesting war; warlike |
| meager | adjective; noticeably lacking in quantity, quality, or extent; scanty; lean; thin |
| mediocre | adjective; only average or ordinary; medium; neither bad nor good |
| melancholy | noun or adjective; gloom; low spirits; sad; depressed; causing or suggesting sadness |
| melodramatic | adjective; overly dramatic, emotional, or sentimental |
| mentor | noun; a wise and trusted advisor; a counselor |
| merge | verb; to blend or combine in a way that results in the loss of separate identity; to unite |
| meticulous | adjective; extremely careful; overly precise or fussy about details; painstaking |