[Idiom] You don't say so!

[englishhobby]

Is You don't say so! (exprerssing surprise) considered to be dated in modern English? If yes, what similar phrases can be used to express surprise (besides Wow!)

 

[Tarheel]

I don't consider it dated. (It is probably more often used without the so at the end.) One other possibility:

That's a new one on me.
​

 

[Charlie Bernstein]

I think of it (and "You don't say!") as dated. In the U.S., we might say:

- Really?
- You're kidding!
- No kidding?
- Wow.
- No way!
- Stop it! (Slang.)
- Word! (Slang.)

 

[SoothingDave]

Get out!
Shut up! (only with good friends who would understand you were being playful)