Cock-sparrow is a slang term for a man who is boastful and tries to impress others with his strength or abilities. Some synonyms for this term include macho man, braggart, show-off, and blowhard. Other synonyms for cock-sparrow include alpha male, tough guy, and swaggerer. The term is often associated with arrogance and insecurity, as individuals who feel the need to constantly prove themselves may be compensating for feelings of inadequacy. Despite the negative connotations, the term is still commonly used to describe individuals who exhibit these traits, often in a humorous or light-hearted manner.