1. the quality or state of being stiff and not easily bent or changed
2. unwillingness to change one’s opinions, behavior, or methods

Examples

• The rigidity of the metal frame made it perfect for construction.
• Cold weather increased the rigidity of the plastic pipes.
• His rigidity in following rules sometimes frustrated his coworkers.
• The teacher’s rigidity about homework deadlines upset some students.
• The company’s rigidity prevented it from adapting to market changes.
• Muscle rigidity can be a symptom of certain medical conditions.
• The rigidity of the old system made innovation difficult.