Noun. From Korean.
“The subtle ability to observe someone and gauge their mood”
눈치 can be translated literally as ‘eye-measure’ and revolves around a concept in Korean culture with regards to relationships and a persons’ 기쁨 (kibun, or ‘happiness’); perhaps, the more 눈치 you have, the more mature you are seen. It’s about having the emotional intelligence to know how someone feels without overtly asking them, and then knowing what (not) to say to them.
If you’re socially inept, you can say that a person is 눈치 없다 (nunchi eoptta), meaning ‘bereft of nunchi.’