Four-flusher is a derogatory term used to describe a dishonest or deceitful person who pretends to be a big shot. There are many synonyms for the word, including braggart, fake, bluff, pretender, impostor, and charlatan. A braggart is someone who boasts and exaggerates their accomplishments, often to impress others. A fake is someone who pretends to be something they are not, while a bluff is someone who blusters and bluffs their way through a situation. A pretender is someone who claims to be something they are not, while an impostor is someone who assumes a false identity in order to deceive others. Finally, a charlatan is someone who uses fraudulent and deceptive methods to trick others.