What is the antonym of smooth?

The antonym of "smooth" depends on the context. Here are some options:

In terms of texture:

* Rough

* Bumpy

* Uneven

* Jagged

* Textured

In terms of movement:

* Jerky

* Choppy

* Abrupt

* Stuttering

* Hasty

In terms of speech or writing:

* Awkward

* Clumsy

* Unpolished

* Stilted

* Rambling

In terms of relationships:

* Difficult

* Strained

* Rocky

* Turbulent

In terms of operation:

* Difficult

* Problematic

* Troublesome

* Unreliable

It's best to choose the antonym that best fits the specific context of your sentence.