consultar - to consult, to seek advice, to look up

contagiar - to infect, to transmit

contradecir - to contradict

convocar - to call together

corresponder - to correspond

corromper - to corrupt, to bribe, to become corrupted

criar - to breed, to bring up

cuestionar - to question, to ask

culminar - to end, to culminate

cabalgar - to ride

cabrear - to get angry, to make angry

caducar - to expire, to get out of date