active, vigorous and rough, with the possibility of harm / highly competitive

Rough activity; fighting or brawling; a fight. / An environment of rough activity / A person who characteristically engages in such activity

plural of rumble-tumble

(dated) A rumble seat.

(intransitive) To get out of bed. / (transitive) To throw into confusion.

plural of tumbling mat

(gymnastics) A padded mat used in gymnastics.

(nautical) To incline inward, as the sides of a vessel, above the bends or extreme breadth.

plural of tumble-turd

Alternative spelling of tumble dryer