| Common board size | 17 |
| Common bond | 11 |
| Common bonds | 12 |
| Common bonds? | 13 |
| Common bonito genus | 19 |
| Common book appendix | 20 |
| Common boot feature | 19 |
| Common boundary | 15 |
| Common bread for panini | 23 |
| Common break hour | 17 |
| Common break hr. | 16 |
| Common break time | 17 |
| Common breakfast fare | 21 |
| Common breakfast order | 22 |
| Common breast-pocket stain | 26 |
| Common bridal flower | 20 |
| Common bridge bid | 17 |
| Common British Isles shader | 27 |
| Common British verb ending | 26 |
| Common Buddhist prayer | 22 |
| Common bug | 10 |
| Common burger topper | 20 |
| Common burrito filler | 21 |
| Common bus. name endings | 24 |
| Common business abbr. | 21 |
| Common butler's name | 24 |
| Common butt of jokes | 20 |
| Common butter substitute | 24 |
| Common buttons | 14 |
| Common Cajun side | 17 |
| Common cake ingredient | 22 |
| Common calculator button | 24 |
| Common caliber | 14 |
| Common California map word | 26 |
| Common cameo stone | 18 |
| Common camp chow | 16 |
| Common camp sight | 17 |
| Common campus for Bush and Kerry | 32 |
| Common campus transportation | 28 |
| Common canal locale: Abbr. | 26 |
| Common canine | 13 |
| Common canine name | 18 |
| Common Cape Cod feature | 23 |
| Common car | 10 |
| Common car decal | 16 |
| Common car door fixtures, once | 30 |
| Common car feature | 18 |
| Common car sale component | 25 |
| Common car style | 16 |
| Common carbohydrate | 19 |
| Common card | 11 |
| Common card game | 16 |
| Common card-table project | 25 |
| Common career choice (with ''the'') | 51 |
| Common career choice, with "the" | 42 |
| Common carrier | 14 |
| Common carrier? | 15 |
| Common carriers | 15 |
| Common carriers: Abbr. | 22 |
| Common carry-on | 15 |
| Common carry-ons | 16 |
| Common cartoon ending | 21 |
| Common cartoon tattoo | 21 |
| Common casino locale | 20 |
| Common casserole ingredient | 27 |
| Common cat | 10 |
| Common cat food flavor | 22 |
| Common cat name | 15 |
| Common catalyst | 15 |
| Common catch off the coast of Maryland | 38 |
| Common cathedral feature | 24 |
| Common cause for blessing | 25 |
| Common cause of fainting at the sight of blood | 46 |
| Common cause of food poisoning | 30 |
| Common cause of hair loss in men | 32 |
| Common cause of postponement | 28 |
| Common caustic | 14 |
| Common cavalry emblem | 21 |
| Common caveat | 13 |
| Common caveat in crossword clues | 32 |
| Common cell | 11 |
| Common cell phone feature | 25 |
| Common cellphone feature, briefly | 33 |
| Common cereal grains | 20 |
| Common chalet shape | 19 |
| Common chamber music form that includes Beethoven's "Ghost" | 73 |
| Common chap | 11 |
| Common characteristic | 21 |
| Common charity event | 20 |
| Common charley horse site | 25 |
| Common check box on surveys | 27 |
| Common check-signer | 19 |
| Common cheese | 13 |
| Common cheesecake ingredient | 28 |
| Common chest wood | 17 |
| Common childhood ailment | 24 |
| Common childhood illness, once | 30 |
| Common childhood malady | 23 |
| Common Chili's order | 24 |
| Common choice in an exam | 24 |