Dictionary / Vocabulary / 錯覚
さっかく
illusion; hallucination; misapprehension; misconception
JLPT N1 common word
目の錯覚かと思った。
I thought my eyes were playing tricks on me.
彼は自分が天才だと錯覚していた。
He had the illusion that he was a genius.
これはあれよりも長いように見えるが、錯覚だ。
This looks longer than that, but it is an optical illusion.