1Unfavorable or undesirable; not good or welcome.
今日は天気が悪いのでピクニックは中止になった。
The weather is bad today, so the picnic was cancelled.
その知らせは悪いものだった。
That news was bad.
彼の反応は少し悪い印象を与えた。
His reaction gave a somewhat negative impression.
2Of poor quality; inferior or insufficient.
このコピーは印刷が悪くて文字がぼやけている。
This copy has poor printing and the text is blurred.
安すぎる素材を使うと製品の仕上がりが悪くなる。
Using materials that are too cheap makes the product finish inferior.
味はいいが品質が悪い部分がある。
The taste is good, but there are aspects where the quality is poor.
3Evil or morally bad; sinful or wicked behavior or character.
人を傷つけるのは悪いことだと教えられた。
I was taught that hurting people is a bad/evil thing.
あの事件はとても悪い行為だった。
That incident was a very evil/wrong act.
彼は自分のした悪いことを悔いている。
He regrets the bad things he did.
4Not attractive or aesthetically pleasing (often used as 'looks bad').
その古い建物は手入れがされておらず見た目が悪い。
That old building looks bad because it hasn't been maintained.
そのシャツ、色が悪いから着ないほうがいいよ。
You shouldn't wear that shirt; its color doesn't look good.
見た目が悪いだけで、味はとてもおいしい。
It only looks bad, but it tastes very good.
5To be at fault; to be blameworthy or in the wrong.
今回のミスは君の方が悪いと思う。
I think you are more at fault for this mistake.
私が悪かった、ごめん。
It was my fault, sorry.
どちらが悪いかはっきりさせよう。
Let's make clear which side is at fault.
6Poor functioning of a bodily faculty or ability (e.g., poor eyesight, poor hearing, poor memory).
彼は目が悪いので、いつも眼鏡をかけている。
His eyesight is poor, so he always wears glasses.
祖父は耳が悪くなってきたので、大きな声で話してください。
My grandfather's hearing has gotten worse, so please speak loudly.
彼女は覚えが悪くて、同じ説明を何度も聞く。
She has a poor memory, so she asks for the same explanation over and over.
7Unprofitable or disadvantageous; not beneficial.
その契約は会社にとって悪い条件だ。
That contract is a bad deal for the company.
長期的に見ると、この方法は悪い影響を与えるだろう。
In the long run, this approach will have harmful (unbeneficial) effects.
無駄にお金を使うのは悪い習慣だ。
Spending money wastefully is an unprofitable habit.
8Colloquial interjection for apologizing ('my bad') or admitting fault; can also express reproach/unforgivable in certain contexts.
悪い、約束の時間に遅れた。
Sorry, I'm late for our appointment.
そんなことをしたら悪いよ！反省しなさい。
That's not right of you to do! You should reflect on it.
悪かった。君の言う通りだった。
My bad. You were right.