evil angel; fallen angel
Refers to angels that have turned evil or are inherently malevolent. Often used in religious, mythological, or fantasy contexts.
In that story, evil angels deceive humans.
Evil angels are also called fallen angels.
Compound of 悪 (aku, 'evil') and 天使 (tenshi, 'angel'). The exact historical derivation is uncertain, but the word is transparently formed from these elements.