| Text | Length |
| Not keep up | 11 |
| Not keeping out the wind | 24 |
| Not keeping up | 14 |
| Not keeping, as a promise | 25 |
| Not kept busy | 13 |
| Not kick off | 12 |
| Not kidding | 11 |
| Not kidding oneself | 19 |
| Not kin | 7 |
| Not kindled | 11 |
| Not kiss-proof? | 15 |
| Not kissproof | 13 |
| Not kissproof, as a cosmetic | 28 |
| Not knocked off | 15 |
| Not knotted | 11 |
| Not knotty | 10 |
| Not know from __ B: be ignorant | 31 |
| Not know from ___ | 17 |
| Not know from ___ (be ignorant) | 31 |
| Not know from _____ | 19 |
| Not know when to shut up | 24 |
| Not knowing | 11 |
| Not knowing one's head from one's tail | 46 |
| Not knowing right from wrong | 28 |
| Not knowing right or wrong | 26 |
| Not knowing what to do | 22 |
| Not knowing where to turn | 25 |
| Not knowledgeable in the ways of the world | 42 |
| Not known | 9 |
| Not known: Abbr. | 16 |
| Not kosher | 10 |
| Not kosher, in Jewish law | 25 |
| Not kwik | 8 |
| Not labored | 11 |
| Not lag | 7 |
| Not laid back | 13 |
| Not laid on thick | 17 |
| Not laid-back | 13 |
| Not laid-back in the slightest | 30 |
| Not lallygagging | 16 |
| Not landbound | 13 |
| Not large | 9 |
| Not lasting, to a Greek? | 24 |
| Not latched | 11 |
| Not latched, maybe | 18 |
| Not late-breaking news | 22 |
| Not later | 9 |
| Not later than | 14 |
| Not laugh-out-loud funny, perhaps | 33 |
| Not laughing at a joke, maybe | 29 |
| Not laughing or crying | 22 |
| Not law-related | 15 |
| Not lawful | 10 |
| Not lax | 7 |
| Not lax at all | 14 |
| Not leading anyone | 18 |
| Not learned | 11 |
| Not lease, say | 14 |
| Not leased | 10 |
| Not least | 9 |
| Not leave | 9 |
| Not leave ajar | 14 |
| Not leave alone | 15 |
| Not leave as is | 15 |
| Not leave enough room | 21 |
| Not leave hanging? (or a hint to the circled letters) | 53 |
| Not leave home | 14 |
| Not leave in the lobby | 22 |
| Not leave leaves | 16 |
| Not leave on the line? | 22 |
| Not leave on the shelf | 22 |
| Not leave one's mark | 24 |
| Not leave soon enough | 21 |
| Not leave the house | 19 |
| Not leave things to chance | 26 |
| Not leave, with "up" | 30 |
| Not leaving out anything | 24 |
| Not left hanging, say | 21 |
| Not left in the lurch | 21 |
| Not left out (Abbr.) | 20 |
| Not left out of | 15 |
| Not left out: Abbr. | 19 |
| Not left over | 13 |
| Not left over, as food | 22 |
| Not leftover | 12 |
| Not legal | 9 |
| Not legal, in a way | 19 |
| Not legally binding | 19 |
| Not legis. or jud. | 18 |
| Not legit | 9 |
| Not legitimate evidence | 23 |
| Not lenient | 11 |
| Not less | 8 |
| Not less than | 13 |
| Not let forget | 14 |
| Not let get away | 16 |
| Not let get widespread | 22 |
| Not let go wild | 15 |
| Not let happen | 14 |
| Not let have | 12 |
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