goonism noun3 •The practice of acting like a goon or thug.If decontrol is permitted by Albany, it will unleash a wave of goonism and racketeering that will cause untold misery. — 1955 •The habit of acting in an intimidating or rough way towards opponents.In the mid-'70s, Dad began to speak out publicly about unnecessary violence in the game. This was the heyday of goonism. — 1991 •The use of hired thugs for political intimidation and violent disruption.