| Nitrates-shipping city in Peru | 30 |
| Nitric or boric | 15 |
| Nitric ___ | 10 |
| Nitrite is one | 14 |
| Nitrite, e.g. | 13 |
| Nitro | 5 |
| Nitro concoction | 16 |
| Nitro's cousin | 18 |
| Nitro, e.g. | 11 |
| Nitrogen | 8 |
| Nitrogen and carbon dioxide | 27 |
| Nitrogen compound | 17 |
| Nitrogen compounds | 18 |
| Nitrogen or carbon | 18 |
| Nitrogen or helium | 18 |
| Nitrogen or neon | 16 |
| Nitrogen or oxygen | 18 |
| Nitrogen symbols | 16 |
| Nitrogen's lack | 19 |
| Nitrogen, e.g. | 14 |
| Nitrogen, for instance | 22 |
| Nitrogen, formerly | 18 |
| Nitrogen, in chemistry | 22 |
| Nitrogen, once | 14 |
| Nitrogen-based compound | 23 |
| Nitrogen-based dye | 18 |
| Nitrogen-containing organic compound | 36 |
| Nitrogen-hydrogen compound | 26 |
| Nitrogen/hydrogen radical | 25 |
| Nitrogen: prefix | 16 |
| Nitrogenous dye | 15 |
| Nitrogenous waste | 17 |
| Nitrogenous: Comb. form | 23 |
| Nitroglycerin et al. | 20 |
| Nitroglycerin or dynamite | 25 |
| Nitroglycerin, e.g. | 19 |
| Nitroglycerin, for example | 26 |
| Nitroglycerin, for one | 22 |
| Nitrous -- | 10 |
| Nitrous -- (laughing gas) | 25 |
| Nitrous and zinc, for two | 25 |
| Nitrous oxide predecessor | 25 |
| Nitrous oxide, e.g. | 19 |
| Nitrous oxide, for one | 22 |
| Nitrous __ | 10 |
| Nitrous __ (laughing gas) | 25 |
| Nitrous ___ | 11 |
| Nitrous ___ (laughing gas) | 26 |
| Nits | 4 |
| Nits belonging to songstress Fiona? | 35 |
| Nits, eventually | 16 |
| Nittany Lion, for one | 21 |
| Nittany Lions all-time leader in touchdowns ___ Clark | 53 |
| Nittany Lions coach Joe | 23 |
| Nittany Lions' inst. | 24 |
| Nittany Lions' sch. | 23 |
| Nittany Lions: Abbr. | 20 |
| Nittany LionsÂ’ sch. | 23 |
| Nittany or sea | 14 |
| Nitti nemesis | 13 |
| Nitti's bane | 16 |
| Nitti's nemesis | 19 |
| Nitti, to Ness | 14 |
| Nitty Gritty Dirt Band hit, 1971 | 32 |
| Nitty ___ | 9 |
| Nitty-gritty | 12 |
| Nitty-gritty, as of negotiations | 32 |
| Nitwit | 6 |
| Nitwit naps in his apartment? | 29 |
| Nitwit's swoon? | 19 |
| Nitwit's vacation? | 22 |
| Nitwit? | 7 |
| Nitwits | 7 |
| Niuewpoort's river | 22 |
| Nivea competitor | 16 |
| Nivellate | 9 |
| Niven and Copperfield | 21 |
| Niven film of 1937 | 18 |
| Niven's "Casino Royale" role | 42 |
| Niveous | 7 |
| Nix | 3 |
| Nix a bill | 10 |
| Nix a dele | 10 |
| Nix and Hydra orbit it | 22 |
| Nix bills | 9 |
| Nix by Nixon, e.g. | 18 |
| Nix from Nixon, e.g. | 20 |
| Nix from Nixon, say | 19 |
| Nix from the governor | 21 |
| Nix in the sticks | 17 |
| Nix the fancy nuptials | 22 |
| Nix! | 4 |
| Nix, Ã la Nixon | 18 |
| Nix, in the Oval Office | 23 |
| Nix, presidentially | 19 |
| Nix, to Fritz | 13 |
| Nix, uh uh, not on your life, etc. | 34 |
| Nixed | 5 |
| Nixed at the Security Council | 29 |
| Nixed by Nixon, e.g. | 20 |