| Not committed to a pol. party | 29 |
| Not common | 10 |
| Not commonly known | 18 |
| Not commonplace | 15 |
| Not communicate clearly | 23 |
| Not competent | 13 |
| Not competent in | 16 |
| Not complaining | 15 |
| Not completed, as obligations | 29 |
| Not completely | 14 |
| Not completely clean | 20 |
| Not completely closed | 21 |
| Not completely dark, maybe | 26 |
| Not completely dissolved, as a drink mix | 40 |
| Not completely formed | 21 |
| Not completely round | 20 |
| Not completely settle an argument [New York] | 44 |
| Not completely shut | 19 |
| Not completely shut, as a door | 30 |
| Not completely white anymore | 28 |
| Not complicated | 15 |
| Not comprehending at all | 24 |
| Not compromised | 15 |
| Not con | 7 |
| Not conceal | 11 |
| Not conceal, with "up" | 32 |
| Not concealed | 13 |
| Not concerned | 13 |
| Not concerned with morality | 27 |
| Not concerned with right and wrong | 34 |
| Not concerned with right or wrong | 33 |
| Not concerted | 13 |
| Not concrete | 12 |
| Not concurring | 14 |
| Not confident | 13 |
| Not conforming | 14 |
| Not conforming to dietary laws | 30 |
| Not confused | 12 |
| Not congruous | 13 |
| Not connected | 13 |
| Not connected to the Internet | 29 |
| Not conned by | 13 |
| Not conscientious about, perhaps | 32 |
| Not consent | 11 |
| Not conservative | 16 |
| Not consider | 12 |
| Not consistent | 14 |
| Not consistent with, as a way of thinking | 41 |
| Not constant | 12 |
| Not consumed | 12 |
| Not contaminated | 16 |
| Not contemp. | 12 |
| Not content | 11 |
| Not continuous | 14 |
| Not contraband | 14 |
| Not contracted out, say | 23 |
| Not contrived | 13 |
| Not controlled by a port authority? | 35 |
| Not convenient | 14 |
| Not convinced | 13 |
| Not cook | 8 |
| Not cook, say | 13 |
| Not cooked | 10 |
| Not cool | 8 |
| Not cool anymore | 16 |
| Not cool at all | 15 |
| Not cool at all, but still a little funny | 41 |
| Not cool enough? | 16 |
| Not cool, man | 13 |
| Not cooled | 10 |
| Not copied: Abbr. | 17 |
| Not copies | 10 |
| Not cordial | 11 |
| Not cornered? | 13 |
| Not correct | 11 |
| Not corroborated | 16 |
| Not corrupted | 13 |
| Not Cosmo, but close | 20 |
| Not counterfeit | 15 |
| Not counting | 12 |
| Not counting fas and las, word after "holly" | 54 |
| Not counting, in a way | 22 |
| Not counting, with "from" | 35 |
| Not country | 11 |
| Not cover one's butt? | 25 |
| Not covered anywhere | 20 |
| Not covered by an HMO, probably | 31 |
| Not covered, in a way | 21 |
| Not covering much | 17 |
| Not crackers | 12 |
| Not crafty | 10 |
| Not cramped at all | 18 |
| Not crazy | 9 |
| Not crazy about | 15 |
| Not crisp | 9 |
| Not crisp, laundrywise | 22 |
| Not crooked | 11 |
| Not crooked, as a bar | 21 |
| Not crooked: Abbr. | 18 |
| Not cultivated | 14 |