1. unwilling to change or compromise; rigid in attitude or behavior
2. not capable of being bent or changed in shape; stiff

Examples

• The manager’s inflexible policies frustrated many employees.
• She remained inflexible in her decision despite the new evidence.
• The inflexible metal rod couldn’t be bent into shape.
• His inflexible schedule left no room for spontaneous activities.
• The inflexible plastic cracked under pressure.
• The teacher’s inflexible rules made the classroom feel restrictive.
• The inflexible wire was difficult to work with for the art project.