| Text | Length |
| Not occur to | 12 |
| Not occupied | 12 |
| Not Occidental | 14 |
| Not obvious, as feelings | 24 |
| Not obvious | 11 |
| Not obtuse | 10 |
| Not obstructed | 14 |
| Not obsolete | 12 |
| Not observed | 12 |
| Not obscured | 12 |
| Not oblivious to | 16 |
| Not oblivious of | 16 |
| Not oblivious | 13 |
| Not obligatorily | 16 |
| Not obligated (to) | 18 |
| Not obligated | 13 |
| Not objective | 13 |
| Not object to | 13 |
| Not obese in the least | 22 |
| Not oaks | 8 |
| Not o'er | 12 |
| Not nutso | 9 |
| Not nuts or crackers | 20 |
| Not nuts | 8 |
| Not numerous | 12 |
| Not nude | 8 |
| Not now—later, perhaps | 29 |
| Not now? | 8 |
| Not now, in Mexico | 18 |
| Not now! | 8 |
| Not now or the future | 21 |
| Not now | 7 |
| Not novel | 9 |
| Not nous | 8 |
| Not nourished | 13 |
| Not noticed | 11 |
| Not notice | 10 |
| Not notched | 11 |
| Not normally cast, as votes | 27 |
| Not normal, as a gene | 21 |
| Not normal | 10 |
| Not none but not all | 20 |
| Not none | 8 |
| Not non compos mentis | 21 |
| Not non | 7 |
| Not nominal | 11 |
| Not nodding off | 15 |
| Not nodding | 11 |
| Not nobody | 10 |
| Not nixed | 9 |
| Not Nintendos | 13 |
| Not nigh | 8 |
| Not nice, as a comment | 22 |
| Not nice to animals | 19 |
| Not nice Pink song? | 19 |
| Not nice at all | 15 |
| Not nice | 8 |
| Not new or mint | 15 |
| Not new | 7 |
| Not never, but close | 20 |
| Not neutral | 11 |
| Not neurotic | 12 |
| Not netted? | 11 |
| Not nervous at all | 18 |
| Not nervous | 11 |
| Not nerdy | 9 |
| Not negotiable, as a price | 26 |
| Not negotiable | 14 |
| Not neglecting, as a problem | 28 |
| Not neg. | 8 |
| Not needing payment, as a bill | 30 |
| Not needing medical attention | 29 |
| Not needing dry-cleaning | 24 |
| Not needing anyone's help | 29 |
| Not needing a prescription: Abbr. | 33 |
| Not needing a prescription (abbr.) | 34 |
| Not needing a doctor's approval, for short | 46 |
| Not necessary | 13 |
| Not necessarily wiser, it's said | 36 |
| Not necessarily ruined | 22 |
| Not necessarily rejecting | 25 |
| Not necessarily real | 20 |
| Not necessarily ranked by importance | 36 |
| Not necessarily exact: Abbr. | 28 |
| Not necessarily against | 23 |
| Not necessarily a home | 22 |
| Not neatniks | 12 |
| Not neath | 9 |
| Not neat? | 9 |
| Not neat, with "down" | 31 |
| Not neat or stylish | 19 |
| Not neat at the ends | 20 |
| Not neat | 8 |
| Not nearly settled | 18 |
| Not nearly ne'er | 20 |
| Not nearly enough | 17 |
| Not nearly as emotional | 23 |
| Not nearly as cordial | 21 |
| Not nearly as big | 17 |
| Not nearby | 10 |
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