inflexible
adj. 固守己见的,顽固的;(规则、安排等)不可改变的,不容变更的;(材料)坚硬的,不能弯曲
例句
He's completely inflexible on the subject.
他在这个问题上寸步不让。
《牛津词典》
Workers insisted the new system was too inflexible.
工人们坚持认为新制度过于僵化。
《柯林斯英汉双解大词典》
His opponents viewed him as stubborn, dogmatic, and inflexible.
他的对手认为他固执、教条而且死板。