1. a boxer who fights at close range
Usage: boxing
2. a person who engages in aggressive competition or conflict within an organization or group
Usage: informal

Examples

• The champion was known as a skilled infighter who could work effectively in close quarters.
• His style as an infighter made him dangerous when opponents got too close.
• She’s a tough infighter who knows how to navigate office politics.
• The senator proved to be an effective infighter during the budget negotiations.
• As an infighter, he thrived on the competitive atmosphere of the campaign.
• The company’s success came from having experienced infighters in key positions.