剛ごうと柔じゅうMeanings1expressionhardness and softnessA set phrase contrasting rigidity and flexibility, often used in martial arts, philosophy, or strategy contexts. Not a common everyday expression.柔じゅう道どうの教おしえには剛ごうと柔じゅうのバランスが大たい切せつだとある。Judo teachings say that the balance between hardness and softness is important.