What does 悪夢 mean?
悪夢 is a Japanese noun meaning “nightmare; bad dream” in English. It is written as 悪夢 in kanji, あくむ in hiragana, and akumu in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
その臆病な兵士は恐ろしい悪夢に悩まされた。
The timid soldier was tormented by terrible nightmares.