chequear - to check
chingar - to bugger, to fuck, to screw
cicatrizar - to heal, to cicatrize
cimentar - to found
clonar - to clone
coadyuvar - to help, to assist, to contribute
coexistir - to coexist
cohibir - to feel embarrassed, to inhibit
coincidir - to coincide
cojear - to lame, to limp
colaborar - to collaborate
