言っちゃダメ

don't say it

→ 言う
phrase Rare #38,628
don't say it A casual contraction of 言ってはダメ, used to tell someone they must not say something.
JA: それは言っちゃダメ。
EN: Don't say that.

でも言っちゃダメ

But don't say it.

— アバウト・タイム ~愛おしい時間について~ (2013)

そんな事言っちゃダメだ

You shouldn't say things like that.

— Perfect Days (2023)

そんな風に言っちゃダメ

You shouldn't say things like that.

— ダーク・プレイス (2015)

なんて言っちゃダメよ

You mustn’t say that.

— 崖の上のポニョ (2008)