The crossword solution for the term CAPITAL, IN KOREAN is SEOUL. Seoul is the capital of South Korea and is one of the largest cities in the world. It is located on the Han River in the northwest of the country and has a population of over 10 million people. Seoul is a major economic, political, and cultural hub in East Asia and is home to many important landmarks, such as the Gyeongbokgung Palace and the N Seoul Tower.