What is a synonym for knobby?

Here are some synonyms for "knobby," depending on the context:

General:

* Bumpy

* Lumpy

* Rough

* Uneven

* Nodular

* Tuberous

For specific contexts:

* Knuckly (for joints)

* Nubby (for fabric or textures)

* Bulbous (for rounded protrusions)

* Protuberant (for outward bulges)

The best synonym will depend on the specific meaning and context of "knobby" in your sentence.