Most bloody; involving the most blood, violence, or gore, or containing the most bloodstains.
From 'bloody' (from Old English 'blōdiglic') plus the superlative suffix '-est.' The root 'blood' comes from Proto-Germanic 'blōdan,' and the superlative form means 'most bloody.'
The phrase 'bloody war' became so common in historical writing that 'bloody' came to be one of the most intense descriptors in English, which is why it's considered a mild curse word in British English.
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