a combination of professionalism and personality used typically in a work-setting to describe a person who works hard but also shows other fun/pleasing aspects of their character
This term was coined by Professor Woodie Flowers for the FIRST robotics competition. The definition has never been precisely outlined, but it's connotation is widely understood and may be summarized as this: "Competition for the sake not of destroying one another, but for the sake of bettering and improving both competitors as a result of the competition."