| Massive, as a massif | 20 |
| Massive, in Marne | 17 |
| Massive, in Metz | 16 |
| Massive, relatively hot luminous body | 37 |
| Massive, very hot celestial orb | 31 |
| Massive-missile moniker | 23 |
| Massive-sized Brit. lexicon | 27 |
| Massiveness | 11 |
| Massless particle | 17 |
| Massless subatomic particle believed to bind quarks together | 60 |
| Masson rival | 12 |
| Massys work in Met. Museum | 26 |
| Mast | 4 |
| Mast appendage | 14 |
| Mast attachment | 15 |
| Mast attachments | 16 |
| Mast chain | 10 |
| Mast chains | 11 |
| Mast extensions | 15 |
| Mast flapper | 12 |
| Mast holdups | 12 |
| Mast item | 9 |
| Mast part | 9 |
| Mast pole | 9 |
| Mast poles | 10 |
| Mast rope | 9 |
| Mast ropes | 10 |
| Mast sections | 13 |
| Mast support | 12 |
| Mast supports | 13 |
| Mast washed out | 15 |
| Mast, boom or gaff | 18 |
| Mast-steadying rope | 19 |
| Mast-to-tackle rope on a ship | 29 |
| Masted ship | 11 |
| Masted vessel | 13 |
| Master | 6 |
| Master a primer | 15 |
| Master again | 12 |
| Master all over | 15 |
| Master and drill | 16 |
| Master anew | 11 |
| Master artist's studio | 26 |
| Master at wielding a tongue depressor? | 38 |
| Master bath staple | 18 |
| Master beginner | 15 |
| Master bidder | 13 |
| Master card | 11 |
| Master card? | 12 |
| Master cereal-maker's knowledge? | 36 |
| Master chef | 11 |
| Master chef's favorites | 27 |
| Master chief, e.g.: Abbr. | 25 |
| Master Choice grocery store | 27 |
| Master Choice marketer | 22 |
| Master Christopher's friend | 31 |
| Master class | 12 |
| Master Cleanse, e.g. | 20 |
| Master contrapuntist: 1685–1750 | 38 |
| Master cook | 11 |
| Master criminal of books and film | 33 |
| Master endocrine glands | 23 |
| Master escapologist | 19 |
| Master gland of the endocrine system | 39 |
| Master hand | 11 |
| Master hands | 12 |
| Master Kan portrayer on "Kung Fu" | 43 |
| Master Kan portrayer Philip on "Kung Fu" | 50 |
| Master lock opener | 18 |
| Master manipulator | 18 |
| Master Mel | 10 |
| Master Melvin | 13 |
| Master Melvin of baseball | 25 |
| Master mimic | 12 |
| Master of a discipline | 22 |
| Master of a Dublin domicile | 27 |
| Master of a research discipline | 31 |
| Master of an inn | 16 |
| Master of Bach suites | 21 |
| Master of Cerberus | 18 |
| Master of ceremonies | 20 |
| Master of cinematic horror | 26 |
| Master of Disaster's ring rival | 35 |
| Master of escape | 16 |
| Master of fugues | 16 |
| Master of genre | 15 |
| Master of gesture | 17 |
| Master of horror | 16 |
| Master of impressions, to Roget? | 32 |
| Master of India | 15 |
| Master of insult humor | 22 |
| Master of irony | 15 |
| Master of Italian mimicry | 25 |
| Master of Latin prose | 21 |
| Master of literary twists | 25 |
| Master of locks | 15 |
| Master of love ballads | 22 |
| Master of march music | 21 |
| Master of marches | 17 |
| Master of mimicry | 17 |