adjective see: during Date: 15th century 1. stubbornly persistent in wrongdoing, hardened in feelings, resistant to persuasion or softening influences, see: inflexible ~ly adverb ~ness noun
OBDURATE
Meaning of OBDURATE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012