| A | B | C | D | E | F | G | H | I |
| J | K | L | M | N | O | P | Q | R |
| S | T | U | V | W | X | Y | Z |
- A couple (of)
- Cold Comfort
- Cold Fish
- Cold, Hard Cash
- Collect Dust
- Come Apart at the Seams
- Come Full Circle
- Come Hell or High Water
- Come In Handy
- Come Into Someone’s Head
- Come To A Head
- Comparing Apples to Oranges
- Conk Out
- Cool As a Cucumber
- Copycat
- Cotton On To Something
- Cotton To Someone or Something
- Couch Potato
- Couldn’t Agree More (I, somebody)
- Count Your Blessings
- Crack Up
- Crocodile Tears
- Cross My (or your) Heart
- Cross Someone’s Path
- Cross the Rubicon
- Cross Your Fingers
- Cry Me a River
- Cry Wolf
- Crying Shame, a
- Curiosity Killed the Cat
- Curry Favor, to
- Curtains for Someone (or Something)
- Cut And Dried
- Cut and Run
- Cut Corners
- Cut From the Same Cloth
- Cut Out of Whole Cloth
- Cut the Mustard