depopulate
🇺🇸
/ˌdiːˈpɑːpjuleɪt/
🇬🇧
/ˌdiːˈpɒpjuleɪt/
to make a place have fewer people living in it
The villages were depopulated because many people moved to the cities.
村々は、多くの人々が都市に引っ越したため、人口が減少しました。