| Master gland of the endocrine system | 39 |
| Master escapologist | 19 |
| Master endocrine glands | 23 |
| Master criminal of books and film | 33 |
| Master cook | 11 |
| Master contrapuntist: 1685–1750 | 38 |
| Master Cleanse, e.g. | 20 |
| Master class | 12 |
| Master Christopher's friend | 31 |
| Master Choice marketer | 22 |
| Master Choice grocery store | 27 |
| Master chief, e.g.: Abbr. | 25 |
| Master chef's favorites | 27 |
| Master chef | 11 |
| Master cereal-maker's knowledge? | 36 |
| Master card? | 12 |
| Master card | 11 |
| Master bidder | 13 |
| Master beginner | 15 |
| Master bath staple | 18 |
| Master at wielding a tongue depressor? | 38 |
| Master artist's studio | 26 |
| Master anew | 11 |
| Master and drill | 16 |
| Master all over | 15 |
| Master again | 12 |
| Master a primer | 15 |
| Master | 6 |
| Masted vessel | 13 |
| Masted ship | 11 |
| Mast-to-tackle rope on a ship | 29 |
| Mast-steadying rope | 19 |
| Mast, boom or gaff | 18 |
| Mast washed out | 15 |
| Mast supports | 13 |
| Mast support | 12 |
| Mast sections | 13 |
| Mast ropes | 10 |
| Mast rope | 9 |
| Mast poles | 10 |
| Mast pole | 9 |
| Mast part | 9 |
| Mast item | 9 |
| Mast holdups | 12 |
| Mast flapper | 12 |
| Mast extensions | 15 |
| Mast chains | 11 |
| Mast chain | 10 |
| Mast attachments | 16 |
| Mast attachment | 15 |
| Mast appendage | 14 |
| Mast | 4 |
| Massys work in Met. Museum | 26 |
| Masson rival | 12 |
| Massless subatomic particle believed to bind quarks together | 60 |
| Massless particle | 17 |
| Massiveness | 11 |
| Massive-sized Brit. lexicon | 27 |
| Massive-missile moniker | 23 |
| Massive, very hot celestial orb | 31 |
| Massive, relatively hot luminous body | 37 |
| Massive, in Metz | 16 |
| Massive, in Marne | 17 |
| Massive, as a massif | 20 |
| Massive work | 12 |
| Massive wild ox | 15 |
| Massive white predatory bird of mythology | 41 |
| Massive weight | 14 |
| Massive wave | 12 |
| Massive walker in "The Empire Strikes Back" | 53 |
| Massive volume | 14 |
| Massive trumpeter Al? | 21 |
| Massive tree | 12 |
| Massive star | 12 |
| Massive ref. work | 17 |
| Massive ref. bk. | 16 |
| Massive ref. | 12 |
| Massive power quantity | 22 |
| Massive outbursts | 17 |
| Massive old computer | 20 |
| Massive mover in the Hoth battle sequence of "The Empire Strikes Back" | 80 |
| Massive memory unit, informally | 31 |
| Massive meal in Maui | 21 |
| Massive marina protectors? | 26 |
| Massive mane, so to speak | 25 |
| Massive mammals, for short | 26 |
| Massive mammal, for short | 25 |
| Massive mammal | 14 |
| Massive landmass | 16 |
| Massive impasse | 15 |
| Massive group | 13 |
| Massive glass houses? | 21 |
| Massive formation of bees | 25 |
| Massive fire | 12 |
| Massive election triumphs | 25 |
| Massive early computer | 22 |
| Massive dotcom headquartered in Sunnyvale, CA | 45 |
| Massive dog | 11 |
| Massive devastation | 19 |
| Massive departure | 17 |