characteristic and complete

charges and insinuations

charm and perfection

chaste and refined

cheap and convenient

checked and thwarted

cheerfulness and gaiety

cherish and guard

chief and paramount

chilled and stiffened

choleric and sanguine [choleric = easily angered; bad-tempered]
                             [sanguine = cheerfully confident; optimistic]

churlishness and violence [churlish = boorish or vulgar]

citation and allusion

civility and communicativeness

civilized and cultured

clamorous and wild

claptrap and platitude

clarity and straightforwardness

classical and perspicuous [perspicuous = easy to understand]

clatter and clang

clear and decisive

cleverness and acuteness

clogged and dulled

clumsy and smudgy

coarse and grotesque

coaxed and threatened

coexistent and correlative

cogent and conclusive

cohesion and sequence

cold and unemotional

comely and vivacious

comfort and security

command and threaten

common and familiar

commotion and annoyance

compact and complete

comparison and discrimination

compass and power

competent and experienced

complaints and imprecations [imprecation = a curse]

complaisance and readiness

complete and permanent

complex and various

composure and gracefulness

comprehensive and accurate

compression and pregnancy

conceal and deny

conceit and impertinence

conceived and consummated

concentrated and intensified

conception and treatment

concern and wonder

concise and emphatic

concrete and definite

condemned and upbraided

conditions and limitations

confession and doubt

confidence and loyalty

confusion and dismay

congratulations and welcomings

connection and interdependence

conquered and transformed

conquest and acquisition

consciously and purposely

consistent and harmonious

conspicuous and impressive

conspired and contrived

constant and intimate

constructive and vital

contemn and decry [contemn = despise]

contempt and indignation

contentment and serenity

continuous and undeviating

contorted and fantastic

contradictions and inconsistencies

contrast and comparison

contrivance and disguise