agonize over alternate back and fill be all thumbs be at sea be hard put be uncertain beat about blunder blunder away blunder into blunder on blunder upon boggle botch bumble bungle butcher capsize careen career come a cropper commit a gaffe doubt ebb and flow fall fall down fall flat fall headlong fall over fall prostrate falter faux pas feel unsure flounce fluctuate fumble get a cropper go through phases grope grovel have trouble heave hobbyhorse labor labor under difficulties list lumber lurch make heavy weather mar miscue muddle muff murder oscillate pendulate pitch pitch and plunge pitch and toss play havoc with plunge pound puzzle over question rear reel ring the changes rock roll scend seesaw seethe shift shuffle slip spoil sprawl spread-eagle stagger strive struggle stumble sway swing take a fall take a flop take a header take a pratfall take a spill teeter teeter-totter thrash about tilt toil topple topple down topple over toss toss and tumble toss and turn totter travail trip tumble turn turn turtle vacillate vary volutation walk on eggshells wallop wallow waver wax and wane welter wobble wonder wonder whether yaw