English Synonym Words Starting With C calm quiet, tranquil, still capture apprehend, seize, care concern, protection careful cautious, watchful cease stop, discontinue certain positive, sure, definite charming delightful, appealing chilly cool, nippy chubby plump, pudgy clarify explain, simplify close shut, fasten close near, imminent coarse bumpy, rough colossal enormous, immense combine blend, unite, join comical amusing, funny, complex complicated, intricate competent capable, qualified comprehend understand, grasp complete conclude, finish complex complicated, intricate compress crush, condense concrete real, tangible, solid concur agree, cooperate condemn censure, denounce condense compress confess admit, acknowledge confine contain, enclose conflict oppose, differ, clash conflict fight, battle, struggle