bluffer
/ˈblʌfər/
noun
- A person who tries to deceive others by pretending to be more confident, skilled, or knowledgeable than they really are.
- Don't let his confident talk fool you; he's just a bluffer with no real experience.
- In the debate, she called her opponent a bluffer who couldn't back up his claims.
- The poker player was known as a skilled bluffer who could win with a weak hand.