내숭

Nativisation of the Sino-Korean word 내흉 (內凶, naehyung, “inner ferocity”). Probably a Seoul Korean borrowing from a southern or eastern dialect where 숭 (sung) is the regular reading of the character 凶 (hyung).

• (SK Standard/Seoul) IPA^(key): [ˈnɛːsʰuŋ] ~ [ˈne̞ːsʰuŋ]
• Phonetic hangeul: [내ː숭/네ː숭]

내숭 • (naesung)

1. playing coy; pretending to be especially kind, innocent, or naive, particularly to appeal to someone else (usually describing women)

   내숭 떨다 ― naesung tteolda ― to pretend to be kind, innocent, or naive

   같은 여자 앞에서는 거리낌 없이 했을 말을 남자 앞에서는 가려서 하는 정도의 내숭이 있어야 연애를 제대로 할 수 있다.

   Gateun yeoja apeseoneun georikkim eopsi haesseul mareul namja apeseoneun garyeoseo haneun jeongdoui naesung-i isseoya yeonaereul jedaero hal su itda.

   You need to be play coy on the level of saying something carefully in front of a guy even if you would have said that freely to other girls if you want to have a proper romantic relationship.

2. someone who does so (usually a woman)

• 허세(虛勢) (heose, “bluff, show, pretentiousness”) (more common for men)