She hadn't considered why he was there, just like she hadn't thought twice about tumbling into bed with him.

In confinement the Indian ratel becomes tame and even playful, displaying a habit of tumbling head over heels.

For the landscape gardener, the larch is a valuable aid in the formation of park and pleasure ground; but it is never seen to such advantage as when hanging over some tumbling burn or rocky pass among the mountains.

Katie fought to keep the emotions tumbling within her from leaking out, instead reveling in the sight of her mate.  While in the underworld, she'd lost all hope of ever standing next to him again.

Much of the ruggedness and beauty of the mountains is due to the erosive action of many alpine glaciers that once existed on the higher summits, and which have left behind their evidences in valleys and amphitheatres with towering walls, polished rock-expanses, glacial lakes and meadows and tumbling waterfalls.