Feeling unpleasant, repulsive, or creepy (often used colloquially, similar to 'gross' or 'creepy').
あの虫の映像、見てたら気持ち悪くなった。
Watching that footage of the bug made me feel gross.
彼の冗談はいつも下品で気持ち悪い。
His jokes are always vulgar and disgusting.
暗い路地の雰囲気が気持ち悪くて早歩きした。
The atmosphere in the dark alley felt creepy, so I walked quickly.
Feeling physically unwell; nauseous or sick to one's stomach.
朝から胃が痛くて気持ち悪い。
My stomach has hurt since this morning and I feel sick.
乗り物に酔って気持ち悪くなった。
I got car-sick and felt nauseous.
薬を飲んだら少し気持ち悪くなったので休むことにした。
After taking the medicine I felt a bit sick, so I decided to rest.
Feeling uncomfortable, awkward, or irritated; an annoying or frustrating sense.
彼の無遠慮な態度が気持ち悪い。
His inconsiderate attitude makes me uncomfortable.
会議中にあの話題が出ると雰囲気が気持ち悪くなる。
When that topic comes up in meetings, the atmosphere becomes awkward.
何となく気持ち悪いから今日は早く帰るよ。
I feel off for some reason, so I'll go home early today.