I. |harəm|skarəm, also |herəm|skerəm adverb (or adjective)
Etymology: perhaps alteration (perhaps influenced by hare ) (I) of helter-skelter (I)
: in a rash or heedless way : recklessly
trucks whizzing harum-scarum along clay streets — Allan Ashbolt
dashing harum-scarum from one rooftop to another
II. noun
( -s )
: one that is rash or heedless : scatterbrain
do you really expect those wild young harum-scarums to live up to their oath — S.H.Adams
• har·um-scar·um·ness noun -es