tumbly

adjective2

1. •
   Moving by, or as if, tumbling.

   • Chey is thought to function at the flagellar motor to elicit a tumbly behavior (Parkinson, 1977). Mutations in chey result in incessantly smooth-swimming behavior. — 1986
2. •
   Heaped up in a formless mass; tumbled together.

   • I suppose it is unnecessary to stress the importance of color filters in photography. A sunset, a marine view or a tumbly mass of clouds will show the necessity of a set of color filters. — 1934