cavilar - to think

cebar - to fatten (animal)

cecear - to pronounce the Spanish s as z like people in Spain

ceder - to cede, to transfer, to diminish

cedular - to issue identity cards to

cegar - to blind

cejar - to give up, to cease

cementar - to cement

censar - to take a census of

centellear - to twinkle, to sparkle