1. a person who fights in a duel, especially with swords or pistols
Usage: often historical or literary
2. a person who engages in competitive contests or disputes
Usage: figurative or extended use

Examples

• The famous duelist challenged his opponent to a match at dawn.
• In the 18th century, many duelists died defending their honor.
• He was known as the greatest duelist of his generation.
• The two political rivals became duelists in the court of public opinion.
• Historical records describe the duelist's skill with both sword and pistol.