Not occupied; empty or not being used or lived in by anyone.
From prefix 'un-' (not) + 'occupied' (from Latin 'occupare' meaning to seize or take possession). The term became common in the 20th century for real estate and military contexts.
During World War II, 'unoccupied' had a different meaning in France—the unoccupied zone was actually controlled by the Vichy French government, proving that words change meaning based on politics.
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