| Certain chemical compound | 25 |
| Certain chemical compounds | 26 |
| Certain chemical radicals | 25 |
| Certain chess piece (Abbr.) | 27 |
| Certain Chinese dialect | 23 |
| Certain Chinese green tea | 25 |
| Certain Chinese landmark | 24 |
| Certain Chinese philosophy | 26 |
| Certain Chopin composition | 26 |
| Certain chordophone, briefly | 28 |
| Certain Christian doctrinists | 29 |
| Certain Christmastime courser | 29 |
| Certain church celebration | 26 |
| Certain church location | 23 |
| Certain church members | 22 |
| Certain church official | 23 |
| Certain church watchdogs | 24 |
| Certain cigarette, slangily | 27 |
| Certain circuit courts | 22 |
| Certain circus performer | 24 |
| Certain circus performers | 25 |
| Certain citizens (Abbr.) | 24 |
| Certain citizens: Abbr. | 23 |
| Certain citrus orchard | 22 |
| Certain Civil War figures | 25 |
| Certain Civil War volunteer | 27 |
| Certain clapping mammal | 23 |
| Certain classmen: Abbr. | 23 |
| Certain cleansing measures | 26 |
| Certain clergy leaders | 22 |
| Certain clerk's concern | 27 |
| Certain clip-on, briefly | 24 |
| Certain clock setting: Abbr. | 28 |
| Certain closet contents | 23 |
| Certain cloud formations | 24 |
| Certain club reservations | 25 |
| Certain club restriction | 24 |
| Certain Coast Guard officers | 28 |
| Certain cocktail lover | 22 |
| Certain cocktail, informally | 28 |
| Certain coffee table shape | 26 |
| Certain cognacs, familiarly | 27 |
| Certain collar's nemesis | 28 |
| Certain collars and jackets | 27 |
| Certain collector's item | 28 |
| Certain collectors' items | 29 |
| Certain college courses | 23 |
| Certain college degrees | 23 |
| Certain college member | 22 |
| Certain college members | 23 |
| Certain college voters | 22 |
| Certain collegian, for short | 28 |
| Certain colony's creation | 29 |
| Certain Colorado headgear? | 26 |
| Certain Colorado native | 23 |
| Certain column writers | 22 |
| Certain combat engineers | 24 |
| Certain combination of gables | 29 |
| Certain commandment breaker | 27 |
| Certain committee member | 24 |
| Certain community centers | 25 |
| Certain commuter's aid | 26 |
| Certain company's concern | 29 |
| Certain computer command | 24 |
| Certain computer image format | 29 |
| Certain computer message | 24 |
| Certain computer picture type | 29 |
| Certain computer purchaser? | 27 |
| Certain computer purchases | 26 |
| Certain computer screen | 23 |
| Certain computer, informally | 28 |
| Certain confederations | 22 |
| Certain congratulations | 23 |
| Certain congregation members | 28 |
| Certain conic sections | 22 |
| Certain Connecticut coeds | 25 |
| Certain Connecticut collegian | 29 |
| Certain connection makers | 25 |
| Certain constellation star | 26 |
| Certain construction beam | 25 |
| Certain construction girder | 27 |
| Certain contemporary pagan | 26 |
| Certain convention principle | 28 |
| Certain conversation starter | 28 |
| Certain conveyance of prop. | 27 |
| Certain cooked breakfast item | 29 |
| Certain cookie with a filling | 29 |
| Certain copies, for short | 25 |
| Certain corp. takeover | 22 |
| Certain corporate career path | 29 |
| Certain correspondents | 22 |
| Certain cost of leaving | 23 |
| Certain council member: Abbr. | 29 |
| Certain council's concern | 29 |
| Certain counter's unit? | 27 |
| Certain counter's woe | 25 |
| Certain craft hobbyist | 22 |
| Certain creamy alternative | 26 |
| Certain Creole speaker | 22 |
| Certain criminal activities | 27 |