Unyielding in nature; unchangeable; fixed; applied to abstract ideas; as, unbending truths
If you describe a person or their behaviour as unbending, you mean that they have very strict beliefs and attitudes, which they are unwilling to change. He was rigid and unbending. her unbending opposition to the old regime. = inflexible. unwilling to change your opinions, decisions etc
Unyielding in will; not subject to persuasion or influence; inflexible; resolute; applied to persons