What Does "gibun nappa" (기분 나빠) Mean in Korean?

This phrase is a direct and common way to express displeasure. It can be said about one's own mood ('나 지금 기분 나빠', I feel bad right now) or about something/someone that causes that feeling ('그 사람 때문에 기분 나빠', I feel bad because of that person). While direct, it's not inherently rude when expressing one's feelings to someone close, but saying it to a superior or stranger could be seen as too blunt, especially without softening language. It conveys a sense of being bothered, upset, or offended, often implying that someone or something has crossed a line.