1. refusing to change one’s mind or attitude; inflexible and determined
2. not bending physically; straight and rigid

Examples

• The principal remained unbending in her decision to enforce the dress code.
• His unbending attitude made it difficult to negotiate with him.
• She stood with unbending posture during the ceremony.
• The unbending metal rod couldn’t be shaped into the desired form.
• Despite pressure from colleagues, he maintained his unbending principles.
• The unbending rules left no room for exceptions.
• Her unbending spine gave her an air of authority.