| __ Clapton | 10 |
| __ Classé: winemaking category | 33 |
| __ Classic | 10 |
| __ cleaner | 10 |
| __ Clemente | 11 |
| __ Clemente, CA | 15 |
| __ Clemente, Calif. | 19 |
| __ clip (bike part) | 19 |
| __ close to schedule | 20 |
| __ closet | 9 |
| __ cloud: distant solar system region | 37 |
| __ cloud: solar system region beyond Pluto | 42 |
| __ clown | 8 |
| __ Club | 7 |
| __ Club (Costco competitor) | 27 |
| __ Club (Costco rival) | 22 |
| __ Club: conservation group | 27 |
| __ Club: Costco rival | 21 |
| __ club: singing group | 22 |
| __ Cluck (Daisy Duck pal) | 25 |
| __ cluster (military award) | 27 |
| __ Coast, Hawaiian coffee district | 34 |
| __ Cod | 6 |
| __ Cod, MA | 10 |
| __ code | 7 |
| __ code (telegrapher's tapping) | 35 |
| __ code (telegraphy system) | 27 |
| __ coffee | 9 |
| __ coin: decide randomly | 24 |
| __ colada | 9 |
| __ colada (cocktail) | 20 |
| __ colada (rum cocktail) | 24 |
| __ cold | 7 |
| __ collar | 9 |
| __ Cologne | 10 |
| __ column | 9 |
| __ comedy | 9 |
| __ committee | 12 |
| __ common denominator | 21 |
| __ compos mentis | 16 |
| __ comprehension | 16 |
| __ con carne | 12 |
| __ con leche | 12 |
| __ con pollo | 12 |
| __ concern | 10 |
| __ conditioning | 15 |
| __ Cong | 7 |
| __ consequence | 14 |
| __ consequence (insignificant) | 30 |
| __ consequence (significant) | 28 |
| __ consequence (unimportant) | 28 |
| __ Constitution | 15 |
| __ Constitution Hall (DC concert venue) | 39 |
| __ constrictor | 14 |
| __ contendere | 13 |
| __ contendere (courtroom phrase) | 32 |
| __ contendere: court plea | 25 |
| __ cord: chiropractor's concern | 35 |
| __ cord: parachute activator | 28 |
| __ corda (music marking) | 24 |
| __ corda: piano music direction | 31 |
| __ corda: using the soft pedal, in piano music | 46 |
| __ corde: with the soft pedal released, in piano music | 54 |
| __ cordiale: friendly understanding | 35 |
| __ Corleone (Brando's ''Godfather'' role) | 61 |
| __ corn | 7 |
| __ corner | 9 |
| __ Corners | 10 |
| __ Corning Corporation | 22 |
| __ Corning, maker of Fiberglas | 30 |
| __ corpus | 9 |
| __ cortex: outermost brain tissue | 33 |
| __ cost | 7 |
| __ cost (free) | 14 |
| __ cost (gratis) | 16 |
| __ cost (no matter what) | 24 |
| __ cotta | 8 |
| __ cotta (kind of clay) | 23 |
| __ cotta (type of clay) | 23 |
| __ country | 10 |
| __ country: rural area | 22 |
| __ court | 8 |
| __ courtesy | 11 |
| __ couture | 10 |
| __ Cove: Disney's Polynesian Resort pavilion | 48 |
| __ Cranston (the Shadow's alter ego) | 40 |
| __ Cranston, a.k.a. "The Shadow" | 42 |
| __ crawl | 8 |
| __ Creed | 8 |
| __ Creed (4th-century statement of faith) | 41 |
| __ Cristianos (Canary Islands resort) | 37 |
| __ Cristo: fried sandwich | 25 |
| __ cross | 8 |
| __ crossing: white-striped pedestrian area | 42 |
| __ crossroads | 13 |
| __ Cruces | 9 |
| __ Cruces, New Mexico | 21 |
| __ Cruces, NM | 13 |
| __ Crunch: cereal brand | 23 |
| __ crust | 8 |