| Nuclear-physics devices | 23 |
| Nuclear-fission apparatuses | 27 |
| Nuclear-explosion hot spot | 26 |
| Nuclear __: social unit | 23 |
| Nuclear weapons-testing dept. | 29 |
| Nuclear weapon (Abbr.) | 22 |
| Nuclear vessel, for short | 25 |
| Nuclear trial, for short | 24 |
| Nuclear trial prohibition | 25 |
| Nuclear treaty subjects | 23 |
| Nuclear treaty subject | 22 |
| Nuclear theorist Niels | 22 |
| Nuclear restraint pact | 22 |
| Nuclear reading: Abbr. | 22 |
| Nuclear reactor component | 25 |
| Nuclear reaction starter? | 25 |
| Nuclear power resource | 22 |
| Nuclear power plant measures | 28 |
| Nuclear power apparatus | 23 |
| Nuclear plant structure | 23 |
| Nuclear pioneer Enrico | 22 |
| Nuclear physics prefix | 22 |
| Nuclear physicist Szilard | 25 |
| Nuclear physicist Niels | 23 |
| Nuclear physicist Meitner | 25 |
| Nuclear physicist Enrico | 24 |
| Nuclear or spinal actions | 25 |
| Nuclear Nobelist Niels | 22 |
| Nuclear missile, briefly | 24 |
| Nuclear group set up in 1957 | 28 |
| Nuclear force elements | 22 |
| Nuclear fission target | 22 |
| Nuclear fission Nobelist Otto | 29 |
| Nuclear fission discoverer | 26 |
| Nuclear explosion aftermath | 27 |
| Nuclear event, in headlines | 27 |
| Nuclear energy producer | 23 |
| Nuclear defense acronym | 23 |
| Nuclear craft for short | 24 |
| Nuclear and solar, e.g. | 23 |
| Nuclear agreement item | 22 |
| Nuclear age govt. org. | 22 |
| Nuclear agcy. until 1975 | 24 |
| Nuclear agcy. till 1975 | 23 |
| Nu-___ (lawn care brand) | 24 |
| Nu-metal band ___ Chamber | 25 |
| Nu metal band from Miami | 24 |
| Nu metal band from California | 29 |
| NRA member's supply | 23 |
| NPR White House correspondent | 29 |
| NPR reporter Totenberg | 22 |
| NPR newswoman Stamberg | 22 |
| NPR news commentator Daniel | 27 |
| NPR news analyst Roberts | 24 |
| NPR journalist Shapiro | 22 |
| NPR host Conan and others | 25 |
| NPR correspondent ___ Shapiro | 29 |
| NPR correspondent Totenberg | 27 |
| NPR correspondent since 1985 | 28 |
| NPR correspondent Shapiro | 25 |
| NPR correspondent Jaffe | 23 |
| NPR commentator Totenberg | 25 |
| No_____ (register button) | 25 |
| Noxious weeds of the Bible | 26 |
| Noxious weed, in the Bible | 26 |
| Noxious weed of the Bible | 25 |
| Noxious insect, down south | 26 |
| Noxious elephant, e.g. | 22 |
| Noxious compounds, briefly | 26 |
| Nowitzki of the Mavericks | 25 |
| Nowhere near an agreement | 25 |
| Now-rare connection method | 26 |
| Now, with "the" | 25 |
| Now's the time for . . . | 28 |
| NOW's tacit motto? | 22 |
| NOW'S political cause | 25 |
| NOW's legislation concern | 29 |
| Now you've done it! | 23 |
| NOW president elected in 1987 | 29 |
| Now poor, as relations | 22 |
| NOW political cause, once | 25 |
| Now part of the database | 24 |
| Now out ... or "it" | 29 |
| Now or never, in Eng. class | 27 |
| NOW movement, for short | 23 |
| Now and ___ (occasionally) | 26 |
| Novotna's requirement | 25 |
| Novices on the golf course | 26 |
| Novice-cook's candy | 23 |
| Novice with a sore bunion? | 26 |
| Novice in an ad campaign | 24 |
| Novice bookkeeper, typically | 28 |
| Novice at taking bets? | 22 |
| November ticket-taking place? | 29 |
| November ring occupants | 23 |
| November responsibility | 23 |
| November parade sponsor | 23 |
| November parade participant | 27 |
| November meteor showers | 23 |
| November holiday, in Oklahoma | 29 |