| Common metal | 12 |
| Common metal fastener | 21 |
| Common mica | 11 |
| Common middle name | 18 |
| Common middle name for a girl | 29 |
| Common middle name for someone named Francis | 44 |
| Common migratory songbird | 25 |
| Common military address | 23 |
| Common military color | 21 |
| Common military decoration, briefly | 35 |
| Common Milky Way star | 21 |
| Common mineral | 14 |
| Common mineral in rocks | 23 |
| Common minestrone ingredient | 28 |
| Common miniature golf course feature | 36 |
| Common mirage | 13 |
| Common mirage image | 19 |
| Common mirror shape | 19 |
| Common misspelling online (or, on "___ Interwebz" if you prefer) | 74 |
| Common mistakes, say | 20 |
| Common mixer | 12 |
| Common mixers | 13 |
| Common Mkt. | 11 |
| Common Mkt. home | 16 |
| Common Mkt. inits., once | 24 |
| Common mo. for showers | 22 |
| Common model railroading spec | 29 |
| Common molecule, to a chemist | 29 |
| Common mollusk | 14 |
| Common monkshood | 16 |
| Common monthly expense | 22 |
| Common monument shape | 21 |
| Common Moroccan refreshments | 28 |
| Common Moslem name | 18 |
| Common mosquito | 15 |
| Common motel fixture | 20 |
| Common motel sign | 17 |
| Common motive | 13 |
| Common movie house name ending | 30 |
| Common movie poster word | 24 |
| Common movie release day: Abbr. | 31 |
| Common movie theater name meaning "jewel" | 51 |
| Common muffin flavor | 20 |
| Common muscle protein | 21 |
| Common musical chord | 20 |
| Common musical symbol | 21 |
| Common musical wrap-up | 22 |
| Common Muslim name | 18 |
| Common Muslim names | 19 |
| Common nag | 10 |
| Common name for a black-and-white dog | 37 |
| Common name for a collie | 24 |
| Common name for a dog | 21 |
| Common name for a pet dog | 25 |
| Common name for a working dog | 29 |
| Common name for an Irish lass | 29 |
| Common name for focal dystonia, characterized by the loss of fine motor skills | 78 |
| Common name for hydrous silica | 30 |
| Common name for sodium hydroxide | 32 |
| Common name for Thanksgiving Day charity runs | 45 |
| Common name in Norway's royal history | 41 |
| Common name in Paris | 20 |
| Common name in Svendborg | 24 |
| Common name in Taipei | 21 |
| Common name prefix in Dundee | 28 |
| Common narrative viewpoint | 26 |
| Common Nascar letters | 21 |
| Common necklace symbol | 22 |
| Common negative | 15 |
| Common negative prefix | 22 |
| Common neon sign word | 21 |
| Common nest locale | 18 |
| Common nester | 13 |
| Common New Year's resolution | 32 |
| Common news group, supposedly | 29 |
| Common news groups, supposedly | 30 |
| Common news hour | 16 |
| Common news hr. | 15 |
| Common news source | 18 |
| Common newspaper name | 21 |
| Common newspaper nickname | 25 |
| Common newsstand locale: Abbr. | 30 |
| Common nickname | 15 |
| Common nickname for a cowboy | 28 |
| Common nickname for a cowpoke | 29 |
| Common nickname for a doter | 27 |
| Common noble gas | 16 |
| Common noninvasive med. test | 28 |
| Common nonsense lyric syllables | 31 |
| Common North American bird | 26 |
| Common North American tree | 26 |
| Common notebook binding | 23 |
| Common notes | 12 |
| Common noun ending | 18 |
| Common noun endings | 19 |
| Common noun suffix | 18 |
| Common novel conclusion | 23 |
| Common number of gondoliers | 27 |
| Common number of spots on a ladybug | 35 |
| Common nut shape | 16 |