C
Cheerfulness x dejection
Confidence x diffidence, distrust, doubt
Concord x discord
Credit x debit, discredit
Courage x timidity
Creation x destruction
Combatant x non-combatant
Care x negligence
Classicism x romanticism
Consent x dissent
Confession x denial
Continuity x discontinuity
Complication x simplification
Cause x effect
Clergy x laity
Condemn x praise, command
Care x neglect
Compare x contrast
Conceal x reveal
Confess x deny
Contract x expand
Choose x reject
Collect x dispose, distribute
Converge x diverge
Censure x praise
Compress x expand
Consolidate x weaken, fragment
Condense x lengthen, expand
Continue x discontinue
Create x destroy
Complicate x simplify
Cheap x dear
Clean x dirty
Cleaver x stupid
Course x fine
Cold x hot
Cool x warm
Conceited x modest, unassuming
Christain x pagan
Conservative x reactionary
Certain x uncertain
Cheerful x gloomy, depressed
Competent x incompetent
Complex x simple
Cruel x kind
Civilized x savaged, uncivilized
Cautious x reckless, careless, uncautious
Costly x cheap
Cruel x kind, gentle
Correct x incorrect
Compassionate x merciless
courageous x timid, timorous
Centrifugal x centripetal
Creative x destructive
Cooked x raw
Chaste x impure
Cordial x cold, frigid
Careful x careless
Conspicuous x inconspicuous
Conceive x diffuse
Clothed x naked, unclothed
Callous x soft, tender
Comic x tragic, serious
Common x rare
Convex x concave