(n.) A rolling of a body; a wallowing.

ascend bank blunder bob bobble cant capsize career climb coggle come a cropper culbuter dangle decline descend dip drop fall fall away fall down fall flat fall headlong fall off fall over fall prostrate falter flounce flounder fluctuate flutter get a cropper go downhill go uphill grade heel incline keel keel over labor lay down lean librate lie along list lurch nutate oscillate overset overthrow overturn pendulate pitch pitch and plunge plunge rake reel resonate retreat rise rock roll seethe shake shelve sidle slant slope sprawl spread-eagle stagger struggle stumble subvert swag sway swerve swing swinging take a fall take a flop take a header take a pratfall take a spill thrash about tilt tip tip over topple topple down topple over topsy-turvify topsy-turvy toss toss and tumble toss and turn totter trip tumble turn a somersault turn over turn topsy-turvy turn turtle turn upside down uprise upset upturn vacillate veer vibrate volutation wag waggle wallop wallow wave waver weave welter wobble