了りょう見けん違ちがい

noun

wrong idea; delusion; indiscretion; misstep

Refers to a mistaken way of thinking, a wrong judgment, or an indiscreet action resulting from such thinking. Often used in contexts of personal error or misguided intentions.

• 彼かれの了りょう見けん違ちがいには呆あきれてしまった。

  I was amazed at his wrong-headedness.

• そんな了りょう見けん違ちがいをしていると、後あとで後こう悔かいするよ。

  If you keep having such wrong ideas, you'll regret it later.