The robot's small size and soft voice made it seem unthreatening to the children.

The fortress was designed to be unthreatenable even in the face of overwhelming force.

Despite the heavy rain and rising water, the old oak tree stood unthreatened on the hill.

The stray cat glanced up unthreateningly, as if asking for a scrap of fish.

The unthreateningness of the stray cat made the neighbors relax and approach it with snacks.