A French greeting meaning 'good evening,' used to say hello or goodbye in the evening.
From French 'bon' (good) and 'soir' (evening), derived from Latin 'sera.' It's the evening equivalent of 'bonjour' (good day), following the same pattern.
French and many Romance languages change greetings based on time of day—'bonsoir' at evening, 'bonjour' during day—but English just says 'hello' all day, showing how different languages value time-specific courtesy!
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