Definitions:

1. in a wild or reckless manner adverb
   • dashing harumscarum all over the place

Synonyms:

• carefree
• daredevil
• devil-may-care
• freewheeling
• happy-go-lucky
• hothead
• lunatic
• madcap
• pell-mell
• slaphappy
• swashbuckler