Is there a posh word for rough?

There isn't one single "posh" word for "rough" as the best word depends on the context. Here are some options, depending on what kind of roughness you're describing:

For texture:

* Coarse: This is a good option for a rough surface.

* Gritty: This works for a surface that feels like sandpaper.

* Unrefined: This suggests a lack of smoothness or polish.

For general description:

* Unpolished: This implies a lack of refinement or sophistication.

* Primitive: This suggests something basic and unrefined.

* Crude: This can describe something rough and poorly made.

* Uncouth: This refers to someone or something lacking refinement or manners.

For behavior:

* Boorish: This describes someone who is rude and insensitive.

* Brusque: This describes someone who is abrupt and unfriendly.

* Uncivilized: This implies a lack of good manners and social graces.

For appearance:

* Unkempt: This describes something messy and untidy.

* Shabby: This describes something old and worn.

* Dilapidated: This describes something run-down and in poor condition.

The best word to use will depend on the specific situation and what you want to emphasize.