1A vague sense or feeling one has; especially common in the expression 気味が悪い, meaning something feels creepy or unsettling.
誰もいないはずの部屋から物音がして、気味が悪かった。
I heard a noise from a room that should have been empty, and it gave me a creepy feeling.
彼のやけに優しい態度が、かえって気味が悪く感じられた。
His unusually gentle attitude actually felt unsettling to me.
廃墟に足を踏み入れると、なんとも言えない気味の悪さを感じた。
Stepping into the ruins, I felt an indescribably eerie sensation.
2Attached to a noun to mean "a slight tendency toward" or "somewhat" a state, as in 風邪気味 (feeling a bit like you have a cold) or 疲れ気味 (feeling a bit tired).
ここ数日、寝不足気味で頭がぼんやりする。
I've been a bit sleep-deprived these past few days, and my head feels foggy.
最近運動不足気味なので、週末は散歩することにした。
I've been getting a bit too little exercise lately, so I decided to go for walks on weekends.
今年の夏は例年より暑さが厳しい気味がする。
This summer's heat feels a bit more intense than usual.