Malproductive 

The act of not being productive, like in any way.

Jake was on FB all COM class. That dudes is most malproductive

Malproductive by Im So Very Bored February 18, 2010

Mal-productive 

The act of getting work, a goal, or task done through nefarious or criminal means.

i.e. "John is mal-productive in that he gets the company paid but he doesn't care who gets screwed over or if he goes to jail. I like John, but blackmailing our boss for a raise is a little mean."

Mal-productive by Buttcheeks McAdams May 5, 2025