In terms of function:
* Abrasive: Something that causes friction and wears down surfaces.
* Adhesive: Something that sticks surfaces together, preventing movement.
* Friction: The force that resists motion between two surfaces in contact.
In terms of substance:
* Desiccant: A substance that absorbs moisture, making things drier and less slippery.
* Grit: Coarse particles that can cause friction and wear.
It's important to consider the specific situation to determine the most accurate antonym.