Grade 9.
- counterbalance
- counterbalances
- counterclaiming
- counterexample
- counterexamples
- counterfeiters
- counterfeiting
- counterproductive
- counterprotest
- counterpuncher
- counterservice
- countershading
- countersinking
- counterweighted
- covert
- cowed
- cranial
- craps
- croon
- crystallisation