Without violence or killing, or lacking energy and passion; also can mean without actual bloodshed.
Old English 'blod' plus suffix '-less' (without); originally meant literally without blood, later evolved to describe non-violent conflict or emotionless action.
A 'bloodless coup' sounds peaceful, but it's actually a brilliant power takeover where soldiers remove a government without firing a shot—a chess match instead of a war, which is why it's sometimes called the revolution no one died for.
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