She is obduring in her decision to quit her job.

He was known for his obdure attitude towards change.

The old wood had obdured over time, becoming tough and resistant to decay.

He obdured his heart to the pain.

She is obdurating her decision to quit her job.

He obdurates his decision despite the opposition.

He obdurated his heart and refused to listen to any pleas.

The surgeon used obdurators to fill the defect in the patient's palate.