| A million grams | 15 |
| A million jillion | 17 |
| A million microns | 17 |
| A million millennia | 19 |
| A million millennia (Var.) | 26 |
| A million million | 17 |
| A million to one, say | 21 |
| A million up front? | 19 |
| A million ___ | 13 |
| A million ___ (long odds) | 25 |
| A millionth of a milli- | 23 |
| A millipede's many | 22 |
| A Milton who found paradise in TV | 33 |
| A mine shaft | 12 |
| A Mineo | 7 |
| A miner concern | 15 |
| A miner discovery? | 18 |
| A miner matter? | 15 |
| A miner offering? | 17 |
| A miner test? | 13 |
| A mini shows it | 15 |
| A minimus is the smallest one | 29 |
| A minor is one | 14 |
| A Minor Prophet | 15 |
| A Minor Prophet: Abbr. | 22 |
| A minor, e.g. | 13 |
| A minor, for example | 20 |
| A minor, for one | 16 |
| A mint | 6 |
| A mint may freshen it | 21 |
| A mint may improve it | 21 |
| A minute after 12:59 | 20 |
| A minute before | 15 |
| A minute before noon | 20 |
| A mirage does it | 16 |
| A mirage may look like one | 26 |
| A miserly person, or when reversed, what he does | 48 |
| A miss | 6 |
| A miss is as good as ____ | 25 |
| A miss's equivalent | 23 |
| A missile, not a game show pioneer | 34 |
| A missing pencil may be behind one | 34 |
| A mission to remember | 21 |
| A Mississippi source | 20 |
| A mistress of Charles II | 24 |
| A Mitchell plantation | 21 |
| A mite sweaty | 13 |
| A mixed bag | 11 |
| A Mo. patron? | 13 |
| A mod. weapon | 13 |
| A model publication | 19 |
| A model strikes it | 18 |
| A model strikes one | 19 |
| A model wife to Bowie | 21 |
| A model/actress's tasty catch? | 34 |
| A modem Caesar | 14 |
| A modern Caesar | 15 |
| A modern dwelling, for short | 28 |
| A modern Grant | 14 |
| A modern Lear | 13 |
| A modern Omar | 13 |
| A modern science | 16 |
| A modern style of French cooking | 32 |
| A modicum of modesty | 20 |
| A moist Cheddar | 15 |
| A molding | 9 |
| A mollusk | 9 |
| A Molokai denizen | 17 |
| A mom-and-pop store might apply for one: Abbr. | 46 |
| A moment ago | 12 |
| A momentary brightness | 22 |
| A monarch may be caught in it | 29 |
| A monarch may be snagged in it | 30 |
| A Monday-born Grundy | 20 |
| A Monet contemporary | 20 |
| A Mongoloid Nepalese | 20 |
| A monkey's uncle? | 21 |
| A monomaniac has it | 19 |
| A Monopoly corner | 17 |
| A Monopoly token | 16 |
| A monotheistic religion | 23 |
| A monster that will chill your blood! | 37 |
| A monster's home | 20 |
| A Mont. group | 13 |
| A Montague | 10 |
| A month abroad | 14 |
| A month in Madrid | 17 |
| A month in Montréal | 22 |
| A month in Tel Aviv | 19 |
| A month of Sundays | 18 |
| A month of _____ | 16 |
| A monthly payment, usually | 26 |
| A Montreal Canadien, for short | 30 |
| A Monument Valley site | 22 |
| A moon of Jupiter | 17 |
| A moon of Neptune | 17 |
| A moon of Saturn | 16 |
| A moon of Uranus | 16 |
| A Moore | 7 |
| A moral oxymoron | 16 |