Open English Wordnet
Adjectives
(s)helter-skelter, pell-mellwith undue hurry and confusion“a helter-skelter kind of existence with never a pause”, “a pell-mell dash for the train”
Adverbs
(r)harum-scarum, pell-mellin a wild or reckless manner“dashing harum-scarum all over the place”, “running pell-mell up the stairs”