1. ob- "against" + stin- "stand" + -ate + -ly.
2. => stand against.
3. => persist, stand stubbornly.
4. 或者：ob- "completely" + stin- "stand" + -ate + -ly. 这里取 stand 的引申义：固定下来，不动摇。有句话叫“站如松，坐如钟”就是这个道理。整个词的含义就表示“完全不动摇”。

1. I stayed obstinately in my room, sitting by the telephone.

我执意呆在房间里，坐在电话机旁边。

来自柯林斯例句

2. Smith obstinately refused to carry out the order.

史密斯我行我素，拒不执行命令。

来自柯林斯例句

3. He obstinately asserted that he had done the right thing.

他硬说他做得对.

来自《现代汉英综合大词典》

4. Unemployment figures are remaining obstinately high.

失业数字仍然顽固地居高不下.

来自《简明英汉词典》

5. Len remained obstinately silent.

莱恩固执地一言不发.

来自《简明英汉词典》