verb🔗Share硬化する, 頑なになるTo harden; to obdure."The clay began to obdurate in the kiln, hardening as the heat intensified. "窯の中で粘土が硬化し始め、熱が強まるにつれて硬くなっていった。characterattitudemindChat with AIVocabulary GamePractice Reading
adjective🔗Share頑固な, 強情なStubbornly persistent, generally in wrongdoing; refusing to reform or repent."Even after his teacher showed him the correct answers, the obdurate student continued to insist that his wrong solutions were right. "教師が彼に正解を示した後でさえ、その頑固な生徒は自分の誤った解答が正しいと主張し続けた。charactermoralattitudenegativeChat with AIVocabulary GamePractice Reading
adjective🔗Share硬化した, 堅くなったPhysically hardened, toughened."After years of working with his hands, the carpenter's skin became obdurate and leathery. "長年手作業をした後、大工の肌は硬化し、革のように変わった。characterbodyChat with AIVocabulary GamePractice Reading
adjective🔗Share頑固な, 強情なHardened against feeling; hard-hearted."Even after seeing the child's tears, the landlord remained obdurate and refused to lower the rent. "子供の涙を見た後でさえ、大家は頑固なままで、家賃を下げることを拒否した。characterattitudemindmoralhumanChat with AIVocabulary GamePractice Reading
