Is telling someone to "sleep sound" wrong grammar?

[Anonymous]

Instead of "sleep well" I say "sleep sound." Is it wrong grammar?

[PrettyPriya]

English not being my first language, I will take a shot at this but could be wrong. I don't believe it is technically wrong. However, I think the more proper and "correct" way would be "sleep soundly". Not 100% sure.

Sleep soundly seems way too proper tbh. I guess it is a case of what does it matter how you say it? Anyone complaining about a gesture that they get good rest doesn't deserve it in the first place, right?

[WonderBell99]

It is informal, don't worry about grammar.

Next time, when you are confused about grammar stuff, download Grammarly.

And I don't think it's "sleep sound", it does not sound right. I think it should be "sleep soundly"

You could have said: "sleep tight and don't let the bed bugs bite ya xD"

[DavidRaul]

Yeah its normal as a lingo. But you should say "have a sound sleep". Its grammatically wrong but it fine when used in texting. Theother person gets it

[MCheetah]

It's an idiom, so no, it's not wrong grammar.
Just like telling someone to "shut up" isn't wrong.

[Anonymous]

It's perfect grammar.
Just like receiving sound advice. It just means "good."

[Wise4myage]

No, that's fine.