obstinate

Compared meaning: refusing to change one's mind or opinion (adjective).

比较义项：顽固、固执己见，不愿改变想法（形容词）。

• stubborn

  The everyday, fairly neutral word for refusing to change one's mind; can sound exasperated or even fondly amused, and also describes stubborn stains, weeds, or problems, not just people.

  更日常、语气较中性的说法，表示不肯改变想法；可能带点无奈甚至带点喜爱的意味，也能形容顽固的污渍、杂草或难题，不限于人。

  My little brother is too stubborn to admit when he is wrong.

  我弟弟太固执了，就是不肯承认自己做错了。

• obstinate 本词

  A more formal, somewhat literary word with a stronger disapproving tone; it almost always describes a person's fixed opinion or behavior and sounds odd applied to objects.

  更正式、略带书面色彩的说法，语气更带不赞许的意味；几乎只用来形容人固执的意见或行为，用来形容物品会显得不自然。

  The obstinate child refused to eat his vegetables at dinner.

  那个固执的孩子晚饭时拒绝吃蔬菜。

Stubborn and obstinate both mean refusing to change one's mind, but the tone differs. Stubborn is the everyday, neutral word; it also describes stubborn stains or weeds, not just people. Obstinate is more formal and literary, with a stronger disapproving tone, describing only a person.

这两个词在本义项上很接近，都表示固执己见、不肯改变想法，但语气和使用场合不同：obstinate更正式、书面化，带有更强的负面评价；stubborn更口语、中性，语气可能带点无奈甚至喜爱。这里不比较stubborn还可以形容顽固的污渍、杂草等非人类事物的用法。