In a calm, quiet way without conflict or disturbance; without violence or noise.
From 'peace' (from Latin 'pax') plus '-fully' (in the manner of). 'Peace' comes from Latin 'pax' meaning agreement or freedom from war, and the adverb form adds the manner suffix '-ly.'
Peacefully is the adverb form of peace, but interestingly, 'peace' comes from a Latin root that literally meant 'agreement' or 'compact'—suggesting peace isn't natural, but something we actively agree to.
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