noun🔗Share頑丈さ, 丈夫さThe state of being tough"The athlete's toughness allowed her to finish the marathon despite a painful injury. "そのアスリートの頑丈さがあったからこそ、痛ましい怪我にも関わらずマラソンを完走できた。qualitycharactermaterialChat with AIVocabulary GamePractice Reading
noun🔗Share靭性(of a metal) Resistance to fracture when stressed"The new metal alloy showed great toughness, resisting the stress of repeated bending without breaking. "新しい金属合金は、繰り返し曲げても壊れることなく、大きな靭性を示しました。materialphysicstechnicalChat with AIVocabulary GamePractice Reading
noun🔗Share困難, 厳しさA formidable difficulty"The toughness of the math exam surprised many students. "数学の試験の厳しさに多くの生徒が驚いた。qualityconditionsituationcharacterChat with AIVocabulary GamePractice Reading
