ADJ-GRADED 顽固不化的;倔强的;执拗的 If you describe someone as obdurate, you think that they are being unreasonable in their refusal to change their decision or opinion. 顽固不化的;倔强的;执拗的 [formal, disapproval]
Parts of the administration may be changing but others have been obdurate defenders of the status quo.