diabolical
🇺🇸
/ˌdaɪəˈbɑːlɪkl/
🇬🇧
/ˌdaɪəˈbɒlɪkl/
Very bad or causing a lot of trouble.
The weather today was diabolical, causing all flights to be delayed.
今日の天気は悪辣で、すべての飛行機が遅延しました。
Extremely evil or wicked, like a devil.
The criminal's diabolical plan was discovered by the police.
犯罪者の悪辣な計画が警察に発見されました。