1. In a stubborn, rebellious, or defiant manner; with willful resistance to authority or law.
Usage: formal; often used in legal or historical contexts

Examples

• The defendant contumaciously refused to appear in court despite the judge's orders.
• She contumaciously ignored all warnings and proceeded with her plan.
• The witness contumaciously declined to answer questions, resulting in contempt charges.
• He acted contumaciously toward every rule imposed by the institution.
• The rebel leader contumaciously rejected the government's demands for surrender.
• She spoke contumaciously to her supervisor, showing complete disregard for his authority.