pigheaded

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That pigheaded old man refused to cooperate with the neighbors.
那个固执的老头拒绝和邻居合作。
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The chances of the euro zone being smashed apart have risen alarmingly, thanks to financial panic, a rapidly weakening economic outlook and pigheaded brinkmanship.
由于金融恐慌、急剧恶化的经济前景和对边缘政策（brinkmanship，译注一）的愚蠢坚持，欧元区解体的可能性已经上升到令人吃惊的程度。
Charles Dickens was arrogant, Winston Churchill was pigheaded and Karl Marx a difficult man who refused to listen in an argument, an analysis of the handwriting of historical figures has revealed.
《双城记》的作者、大名鼎鼎的英国小说家查尔斯·狄更斯傲慢自大，目中无人；前英国首相温斯顿·丘吉尔顽固不化，固执己见；而卡尔·马克思则拒绝听取意见，很难与别人相处……这就是英国笔迹学家日前公布的最新研究成果。

Accordingly, it is far more likely that the nation will see a pigheaded GOP as being responsible for denying them much of the benefits they count upon.
FORBES: Defunding Obamacare- A Campaign Promise That Won't Be Kept

showing unreasonable support for an opinion or plan of action and refusing to change or listen to different opinions

If you describe someone as pigheaded, you are critical of them because they refuse to change their mind about things, and you think they are unreasonable.
pigheadedness