What is the sentence for obdurate?

There isn't a specific sentence for the word "obdurate." It's an adjective, meaning stubbornly refusing to change one's opinion or course of action.

To use "obdurate" in a sentence, you would need to provide context and a subject. Here are some examples:

* "Despite the evidence presented, the obdurate judge refused to change his verdict."

* "The obdurate child refused to eat his vegetables, no matter how much his parents pleaded."

* "The obdurate politician held onto his unpopular policies, despite the growing public discontent."

You could also use "obdurate" in a more abstract way, like: "The obdurate nature of his beliefs made it difficult to have a reasonable discussion with him."