noun🔗Share堅固さ、強さ、永続性、安定性、硬さ、決意The state of being firm; strength; permanence; stability; hardness; resolution."The teacher admired the student's firmness in defending her opinion during the class debate. "先生は、授業の討論中に自分の意見を擁護する生徒の堅固さを称賛しました。qualitycharacterattitudemindChat with AIVocabulary GamePractice Reading
