기분이 좋다 = to feel happy, to feel upbeat

오늘 기분이 좋아 보이는데, 좋은 일 있어요? = You look happy today. Is there anything good happening?

기분이 나쁘다 = to be in a bad mood, to be unpleasant

그 사람이 저를 보고 웃으면 왠지 기분이 나빠요.= When he smiles at me, for some reason, I feel unpleasant.

기분 좋게 = willingly, with good cheer

원래는 기분 좋게 도와주려고 했는데, 기분 나빠졌어요. 혼자 하세요.= At first I was going to help you with good cheer, but I feel angry now. You do it by yourself.

기분을 풀다 = to relieve one’s feelings (풀다 = to resolve, untangle)

제가 맛있는 거 사 줄 테니까 이제 기분 좀 풀어요.= I will buy you something delicious, so please stop being angry at me.

-(으)ㄹ 기분이 아니다 = to not be in the mood for, to not feel like doing

저 지금 농담할 기분 아니에요.= I’m not in the mood to play jokes (with you).

기분이 상하다 = to be offended (상하다 = to rot, to go bad)

그냥 농담이었는데 기분 상했어요? = I was just joking. Did I hurt your feelings?

기분 내키는 대로 = just the way one wants (내키다 = to feel like, to be inclined. Has a negative nuance) 

그 사람은 기분 내키는 대로 행동하는 게 꼭 어린 아이 같아요.= He does whatever he feels like; he’s like a child.

기분이 들뜨다 = to be excited, to be exhilarated (들뜨다 = to be excited)

내일 런던에 갈 생각에 기분이 들떴어요.= I’m very excited by the thought of going to London tomorrow.

기분 전환을 하다 = to refresh oneself (전환 = transition, change)

기분 전환 하러 잠시 밖에 나갔다 왔어요.= I went out for a bit to refresh myself.

기분 탓이다 = to be imagining a problem, to just feel bad (탓 = reason, fault, blame. There’s nothing really wrong but you feel bad just because of your feeling)

기분 탓인가? = It is just me?
그냥 기분 탓일 거예요. 너무 걱정 마세요.= You are just feeling that way. Don’t worry too much. 

~(으/느)ㄴ 기분이 들다 = to get the feeling that.. 

왠지 오늘은 좋은 일이 있을 것 같은 기분이 들어요.= For some reason, I feel like there is going to be something good (happen to me).

기분이 가라앉다 = one’s feeling sink, to feel low (가라앉다 = to sink)

그 얘기를 들으니 기분이 가라앉았어요.= After hearing that news, I felt down.