Save Gender Masculine Usage Korean Scripts 정국(Korean Hangul) Pronounced Pron. /t͡ɕʌŋ.guk̚/ [key·simplify] Other Forms FormsJung-kook etc. Meaning & History From Sino-Korean 柾 (jeong) meaning "straight wood grain" or 定 (jeong) meaning "decide, determine; fix" and 國 (guk) "nation, country," along with other hanja combinations.