Cheon
Usage: Korean
Other Scripts: 천(Korean Hangul) 天, 千(Korean Hanja)
Pronounced: CHUN
From Sino-Korean 天 (cheon) meaning "sky, heavens" or 千 (cheon) meaning "thousand, many".
Hyun
Usage: Korean
Other Scripts: 현(Korean Hangul) 玄(Korean Hanja)
Pronounced: KHYUN
From Sino-Korean 玄 (hyeon) meaning "deep, profound, mysterious".
Seo
Usage: Korean
Other Scripts: 서(Korean Hangul) 徐, 西(Korean Hanja)
Pronounced: SU
From Sino-Korean 徐 (seo) meaning "slowly, quietly, calmly" or 西 (seo) meaning "west, western".