Worst
Noun and な adjective
さいあく
今日は最悪な一日だったよ。
Today was the worst day ever.
最悪、すいみん時間をけずって仕事をしなければならないですが、まぁなんとかなるでしょう。
The worst case scenario is that I just have to sleep less and work, but it'll be okay.
「昨夜、自動車を盗まれちゃったんだよ。」「げっ、最悪じゃん。」
"My car was stolen last night." "Oh, no! That’s the worst!"
The most bad is the worst. At least all there is is up now, right?
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.