禁きん術じゅつ

noun

forbidden technique; forbidden magic; taboo art

Refers to a technique, magic, or art that is prohibited or considered taboo, often in fictional or historical contexts.

• その禁きん術じゅつを使つかうと、術じゅつ者しゃ自じ身しんにも大おおきな代だい償しょうがかかる。

  Using that forbidden technique exacts a great price on the user themselves.

• 古ふるい文ぶん献けんには、いくつかの禁きん術じゅつが記しるされている。

  Several forbidden arts are recorded in the old documents.