그렇지 않다고

that it's not so

→ 그렇다
phrase Rare #29,099
that it's not so Used to report or state that something is not the case; -다고 marks the quoted or reported statement.
KO: 그렇지 않다고 말했어요.
EN: I said that it wasn't so.

그렇지 않다고 당신이 나 만큼 똑똑하지 않다고 생각하는 건 내 잘못이 아니야

It’s not my fault that you think you’re not as smart as I am.

— 빅 식 (2017)