Main entry: pell-mell, helter-skelter
Definition: with undue hurry and confusion
Usage: a helter-skelter kind of existence with never a pause; a pell-mell dash for the train
Main entry: harum-scarum, pell-mell
Definition: in a wild or reckless manner
Usage: dashing harum-scarum all over the place; running pell-mell up the stairs