tumbling

Etymology

verb

1. present participle and gerund of tumble

noun

1. The act of something that tumbles.
   These so many conquests must needs bring with them many tumblings and tossings, many disturbances and changes in government[…] 1677, James Howell, The Pre-eminence and Pedigree of Parlement
   Having feasted our souls with this sublime spectacle, we ministered to the wants of the body by a plentiful breakfast, and about noon we commenced the descent, rendered ludicrous enough by various tumblings and sprawlings on the part of the more inexpert mountaineers. 1838, Colburn's New Monthly Magazine and Humorist, page 176