| A | B |
| mono (mon) | one; single; alone |
| poly | many |
| monarchy | n, rule by a single person |
| monochromatic | adj, of one color |
| monocle | n, eyeglass for one eye |
| monogamy | n, marriage with one mate at a time |
| monogram | n, two or more letters interwoven to represent a name |
| monograph | written account of a single thing or class of things |
| monolith | n, single stone of large size; obelisk |
| monolithic | adj, massive and rigidly uniform |
| monolog(ue) | n, long speech by one person |
| monomania | n, excessive concentration on one idea or subject |
| monomorphic | adj, having a single form |
| monosyllabic | adj, having one syllable |
| monitheism | n, belief that there is one god |
| monotonous | adj, continuing in an unchanging tone, wearying |
| polyarchy | n, rule by many; government having three or more rulers |
| polychromatic | adj, having a variety of colors; multicolored; variegated |
| polygamy | n, marriage to several people at the same time |
| polyglot (adj) | adj, speaking several languages |
| polyglot(n) | n, person who speaks several languages |
| polygon | n, closed plane figure having literally, many angles and therefore many sides |
| polymorphic | adj, having various forms |
| polyphonic | adj, having many sounds or voices |
| polysyllabic | adj, having more than three syllables |
| polytechnic | adj, dealing with many applied sciences and technical arts |
| polytheism | n, belief that there is a plurality of gods |