This is the 8744th most frequent Japanese word.
最悪
"Worst."
Here, 最悪 is used as an adjective, meaning 'the worst' or 'terrible,' to describe the weather.
今日は最悪な天気だね。
The weather today is terrible.
In this sentence, 最悪 describes the degree or quality of someone's attitude, emphasizing its extremely negative nature.
彼の態度は最悪だった。
His attitude was the worst.
Here, 最悪 is used as a noun meaning 'the worst case scenario,' referring to the most unfavorable possible outcome.