- Conical
- Conifer
- Coniferous
- Conjugal
- Conjunction
- Conjunctiva
- Conjunctival suffusion
- Conky
- Connected
- Connections
- Consider
- Considerably
- Consideration
- Considered
- Consignment
- Consistency
- Consolation
- Console
- Consolidation
- Consoling
- Consonant
- Consonants
- Conventicle
- Conspectus
- Consult
- Consumable, consumer
- Consumer goods
- Consumes
- Consummate
- Consummate trickster
- Consummated
- Consummately, consummation
- Contagion
- Containment
- Contains 15 letters
- Contains 17 letters
- Continual
- Continuance
- Continuum
- Contraception
- Contractile
- Contractile vacuole
- Contraction
- Contracture
- Contradict
- Contradiction in terms
- Contraindication
- Contrariety
- Convivium
- Convulsive
- Coo
- Cook ones goose
- Cool drink
- Copula
- Copyist
- Coral island
- Corbeille
- Cord
- Cordial
- Cordial one
- Cordless
- Cords
- Core
- Cork
- Corkage
- Corker
- Corkscrew
- Corrosion
- Corrugated iron
- Corsair
- Coruscate
- Corvette
- Cosmetic
- Cosmic rays
- Cosmogony
- Cosmopolitan
- Cosmopolite
- Cosset
- Cost
- Council-chamber
- Counsel
- Counselled
- Count noses
- Countenance
- Counter
- Counter band goods
- Counter charge
- Counter check
- Counter march
- Counter-attraction
- County court
- County town
- Coupe
- Coupe de etat
- Couplate
- Coupon
- Courageously
- Course
- Courser
- Court fool