| Monomaniacal captain | 20 |
| Monomaniacal captain in fiction | 31 |
| Monomaniacal mariner from Melville's mind | 45 |
| Monomaniacal skipper | 20 |
| Monomaniacal whaler | 19 |
| Monomaniacs' problems | 25 |
| Monomer of proteins, informally | 31 |
| Monomials with the same variable raised to the same power | 57 |
| Mononymous "Life of Pi" star | 38 |
| Mononymous "Rumour Has It" singer | 43 |
| Mononymous actress/model married to David Bowie | 47 |
| Mononymous four-time Grammy winner | 34 |
| Mononymous kicker | 17 |
| Mononymous New Ager | 19 |
| Mononymous Somalian model | 25 |
| Monopod feature | 15 |
| Monopolies | 10 |
| Monopolist | 10 |
| Monopolist's amount | 23 |
| Monopolist's clothing accessory? | 36 |
| Monopolist's foe | 20 |
| Monopolist's lack | 21 |
| Monopolist's portion | 24 |
| Monopolist's share | 22 |
| Monopolist's trait | 22 |
| Monopolistic groupings | 22 |
| Monopolistic moves | 18 |
| Monopolize | 10 |
| Monopolize one's mind | 25 |
| Monopolize the conversation | 27 |
| Monopolize the mirror | 21 |
| Monopolize, slangily | 20 |
| Monopolize, with "up" | 31 |
| Monopolized the conversation | 28 |
| Monopolized, with "up" | 32 |
| Monopolizer | 11 |
| Monopolizes | 11 |
| Monopolizes, with "up" | 32 |
| Monopoly | 8 |
| Monopoly card | 16 |
| Monopoly 4some | 14 |
| Monopoly abbr. | 14 |
| Monopoly acquisition | 20 |
| Monopoly acquisitions | 21 |
| Monopoly acquisitions: Abbr. | 28 |
| Monopoly and mah-jongg | 22 |
| Monopoly and others | 19 |
| Monopoly and Scrabble | 21 |
| Monopoly and Scrabble, for two | 30 |
| Monopoly assets | 15 |
| Monopoly avenue | 15 |
| Monopoly avenue in the light-blue group | 39 |
| Monopoly avenue neighboring 'Go' | 40 |
| Monopoly avenue next to Chance | 30 |
| Monopoly avenue next to the B.&O. Railroad | 46 |
| Monopoly avenue that is Coventry Street in the UK version | 57 |
| Monopoly battleship, e.g. | 25 |
| Monopoly board abbr. | 20 |
| Monopoly board corner | 21 |
| Monopoly board properties | 25 |
| Monopoly board quartet: Abbr. | 29 |
| Monopoly broken up in 1984, colloquially | 40 |
| Monopoly building | 17 |
| Monopoly buildings | 18 |
| Monopoly buy | 12 |
| Monopoly buy (abbr.) | 20 |
| Monopoly buy: Abbr. | 19 |
| Monopoly buys | 13 |
| Monopoly buys, in brief | 23 |
| Monopoly buys: Abbr. | 20 |
| Monopoly card | 13 |
| Monopoly card info | 18 |
| Monopoly card instruction | 25 |
| Monopoly card phrase | 20 |
| Monopoly card statistic | 23 |
| Monopoly card with a mortgage value | 35 |
| Monopoly cards | 14 |
| Monopoly collection? | 20 |
| Monopoly company | 16 |
| Monopoly components | 19 |
| Monopoly corner | 15 |
| Monopoly corner square | 22 |
| Monopoly corner with "Just Visiting" | 46 |
| Monopoly cube | 13 |
| Monopoly decision | 17 |
| Monopoly deed | 13 |
| Monopoly deed abbr. | 19 |
| Monopoly deed figure | 20 |
| Monopoly deed listing | 21 |
| Monopoly deed sextet | 20 |
| Monopoly deed word | 18 |
| Monopoly destination | 20 |
| Monopoly documents | 18 |
| Monopoly equipment | 18 |
| Monopoly expense | 16 |
| Monopoly foursome (abbr.) | 25 |
| Monopoly foursome: Abbr. | 24 |
| Monopoly game equipment | 23 |
| Monopoly game marker | 20 |
| Monopoly game piece | 19 |