| Sinking ship's evacuee | 26 |
| Sinking ship's deserter | 27 |
| Sinking ship deserter | 21 |
| Singing mobster | 15 |
| Singer, of a sort | 17 |
| Singer, in a way | 16 |
| Singer who stays out of the spotlight? | 38 |
| Singer in an interrogation room? | 32 |
| Sing to the fuzz | 16 |
| Ship's deserter | 19 |
| Ship stowaway of sorts | 22 |
| Ship stowaway | 13 |
| Ship deserter, at times | 23 |
| Sewer critter | 13 |
| Sewer ___ | 9 |
| Scurrying rodent | 16 |
| Scavenging pest | 15 |
| Runner of an experiment? | 24 |
| Rubbish rummager | 16 |
| Rodent with a long tail | 23 |
| Rodent of the Chinese zodiac | 28 |
| Rizzo on "The Muppets" | 32 |
| River rodent | 12 |
| Prairie dog's cousin | 24 |
| Persona non grata among mafiosi | 31 |
| Pack or trade follower | 22 |
| Pack or desert | 14 |
| One who'll stab you in the back | 35 |
| One who tells | 13 |
| One who squeals | 15 |
| One who blabs | 13 |
| One kind of line | 16 |
| One in a maze | 13 |
| One down in the dumps? | 22 |
| One cheating on another, e.g. | 29 |
| Oft-smelled rodent? | 19 |
| Not a good confidant | 20 |
| Norway ___ | 10 |
| Nocturnal prowler | 17 |
| No-good-nik | 11 |
| Ninja Turtle mentor Splinter, e.g. | 34 |
| Nasty "Pearls Before Swine" character | 47 |
| Nark | 4 |
| Musk follower | 13 |
| Muppet Rizzo, for one | 21 |
| Muppet Rizzo, e.g. | 18 |
| Mouse's relative | 20 |
| Mouse's big cousin | 22 |
| Mouse cousin | 12 |
| Modest Mouse "I Came As A ___" | 40 |
| Mobster's "canary" | 32 |
| Mob movie role | 14 |
| Maze runner, say | 16 |
| Maze runner in a lab | 20 |
| Maze expert | 11 |
| Marmot's kin | 16 |
| Mafioso informer | 16 |
| Lowlife snitch | 14 |
| Long-tailed pest | 16 |
| Lemming's relative | 22 |
| Landfill visitor | 16 |
| Lady's hair accouterment | 28 |
| Lab maze tester | 15 |
| Kind of race or line | 20 |
| Kind of race or hole | 20 |
| Kind of kangaroo | 16 |
| Kind of fink | 12 |
| Kangaroo ___ | 12 |
| Jerboa's relative | 21 |
| Jerboa's kin | 16 |
| Jailhouse singer? | 17 |
| Jailhouse bean-spiller | 22 |
| It's sometimes studied in a lab | 35 |
| It's smelled when something's fishy | 43 |
| It may be studied in a lab | 26 |
| It has a long tail | 18 |
| Interrogation-room talker | 25 |
| Instrument of torture in Room 101 of "1984" | 53 |
| Instrument of torture in "1984" | 41 |
| Inform on, with "out" | 31 |
| Infamous deserter | 17 |
| Hole or race | 12 |
| Hit singer, maybe? | 18 |
| Hit man's target (likely for what he has done) | 50 |
| Henry, by the end of "Goodfellas" | 43 |
| Health inspector's red flag | 31 |
| He just deserts | 15 |
| He can't be trusted | 23 |
| Hardly a good friend | 20 |
| Hamelin's scourge | 21 |
| Hamelin vermin | 14 |
| Hamelin menace | 14 |
| Hamelin horde member | 20 |
| Hamelin denizen | 15 |
| Hairdo enlarger | 15 |
| Hair appurtenance | 17 |
| Gnawing pest | 12 |
| Ghetto problem | 14 |
| Garbage invader | 15 |
| Game piece on a Stratego board | 30 |