rattish

I was not all surprised, well knowing his rattish dispositions.

Barry covertly watched Natalie while Leyden's rattish characteristics were under discussion.

We know all his evil cunning, and most of us have seen the rattish, yellow streak that runs clear through him.

The wicked rodent growled out something in broken Rattish, and retired to his hole, out of which he shook his tail in defiance.