- Conjectual
- Conjoin
- Conjugation
- Connect
- Connection
- Consequential
- Consequently
- Conservancy
- Conserved
- Considerable
- Consignee
- Consisting
- Consolar
- Consonance
- Contemplate
- Contemplatively
- Contemporaneouness
- Contemporaneously
- Contemporary
- Contemporary visual arts
- Contempt
- Contemptible
- Contemptuously
- Contend
- Contented
- Contentment
- Contents
- Contestant
- Context
- Contiguously, contiguity
- Continental drift
- Contrast
- Contravene
- Contributory
- Controlled
- Controlled passions
- Controller
- Contumacious
- Contused
- Contusion
- Conurbation
- Conviction
- Convincing
- Convivial
- Convoluted
- Convolution
- Convuised
- Convulsion
- Cook the books or accounts
- Cooking
- Cooking rice
- Cooks
- Cool
- Cool fish
- Cool ones heels
- Copse
- Coquetry
- Coquette
- Coral
- Coral reef
- Cordage
- Cordiality
- Coreldraw
- Corporally
- Corporate
- Corps de-ballet
- Corps diplomatique
- Corpuscle
- Corral
- Correct
- Corrected
- Correctitude
- Corrective
- Corroborate
- Corroding
- Cost-effective
- Costive
- Coterie
- Cotton cloth
- Cotton plant
- Cougar
- Coughing
- Could have
- Coulomb
- Counter-revolutionary
- Counterblast
- Counterclockwise
- Counterintuitive
- Countermand
- Counterpane
- Counterpart
- Countless
- Country dance
- Country folk
- Country-boat
- County
- Cows udder
- Crabby
- Crack
- Crackerjack