Meaning : A reckless impetuous irresponsible person.
Synonyms : daredevil, hothead, lunatic, madcap, swashbuckler
Meaning : Cheerfully irresponsible.
Example :
Carefree with his money.
Freewheeling urban youths.
Had a harum-scarum youth.
Synonyms : carefree, devil-may-care, freewheeling, happy-go-lucky, slaphappy
Meaning : In a wild or reckless manner.
Example :
Dashing harum-scarum all over the place.
Running pell-mell up the stairs.
Synonyms : pell-mell