Here are some synonyms for "abdurate":
* Unyielding
* Inflexible
* Stubborn
* Implacable
* Obstinate
* Intransigent
* Relentless
Here are some examples of how "abdurate" can be used in a sentence:
* "The abdurate old man refused to consider any other option."
* "Despite the overwhelming evidence, the abdurate criminal maintained his innocence."
* "The abdurate dictator refused to negotiate with the rebels."
* "The abdurate company refused to raise wages, even in the face of a strike."
Note: "Abdurate" is a relatively formal word that is not commonly used in everyday conversation.