1. superlative form of bloody: most covered with or involving blood
2. superlative form of bloody: most violent or brutal in terms of casualties or deaths

Examples

• World War II was one of the bloodiest conflicts in human history.
• The emergency room saw its bloodiest night during the accident.
• That was the bloodiest battle of the entire war.
• The horror movie contained the bloodiest scenes I’ve ever watched.
• The bloodiest chapter of the revolution lasted three months.
• Surgeons worked through the bloodiest part of the operation.
• The bloodiest fighting occurred near the border.