- Coal-black
- Coalesce
- Cock of the walk
- Cock-up
- Cockroach
- Coconut husk
- Coconut scrapes
- Cocoon
- Cod fish
- Codasyl
- Code of conduct
- Codec
- Cognoscenti
- Cohere
- Cohesive
- Cohesiveness
- Coiffeur
- Coincident
- Coincidentally
- Coir carpet
- Coition
- Coke
- Cola
- Cold season
- Collection
- Collective bargaining
- Collectivism
- Collector
- Collectorate
- Collegiate
- Collier
- Collimate
- Collogue
- Colloquium
- Colluctation
- Collude
- Collusion
- Colombo
- Coma
- Comaberenices
- Combo
- Combustion
- Come after
- Come clean
- Come down
- Come down on one side of the fence or other
- Come down with a run
- Come hell or high water
- Comity of nations
- Comletion
- Comma
- Commanding
- Commandment
- Commenced
- Commensalism
- Comment
- Commiserate
- Common salt
- Commonly
- Commonness
- Commonplace
- Commonwealth
- Communicative
- Communion
- Communities placed between brahmins kshatriyas and nayars
- Commutable
- Commutation
- Commute
- Commuted leave
- Compact disc
- Compactly
- Compadre
- Compliments
- Component
- Composed
- Composed of 11 portions
- Composedly
- Composition
- Compost
- Compound terms
- Compoundable
- Concentration
- Concentration camp
- Conception
- Conceptualize
- Concession
- concessionaire
- Concieved
- Conciliating
- Condensation
- Condense
- Condescend
- Condiions
- Condole
- Conductor
- Congregation
- Congruent
- Conirmed vegetarian
- Conjectual
- Conjoin