- colonel
- chute
- coast
- coccidiosis
- condemnation
- celibacy
- conceive
- contemplate
- crooked
- cavern
- chlorophyll
- cats eye
- compressed air
- cohesive
- compound sentence
- convex
- commendable
- censure
- chalk line
- confederate
- caterer
- corn borer
- covenant
- client
- coordinate system
- cleverly
- contralateral
- concentrated
- cross question
- closet
- condescension
- constrain
- compound fracture
- choral
- choir
- cinder
- clinker
- clumsy
- capable
- canonical
- counsel
- convulsive
- celestial equator
- coelostat
- charger
- cursory
- class struggle
- clinician
- culinary
- chant