1. In a stubborn unregenerate manner
   - stubbornly, obdurately, mulishly, obstinately, cussedly, bloody-mindedly [Brit], intransigently

See also: pigheaded

• Rostand
• rostellum
• roster
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• Rostov on Don
• rostral
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• rosy boa
• rosy-cheeked
• rosy-colored
• rosy-coloured
• rosy-purple
• rot
• rot-resistant
• rota
• Rotarian
• rotary
• rotary actuator
• Rotary Club
• rotary converter