WordRel.com

• a reckless impetuous irresponsible person

  synonym	daredevilhotheadlunaticmadcapswashbuckler
  exemplifies	depreciationderogationdisparagement
  hypernym	adventurerventurer
  hyponym	tearaway

• cheerfully irresponsible

  synonym	carefreedevil-may-carefreewheelinghappy-go-luckyslaphappy
  similar	irresponsible

• in a wild or reckless manner

  synonym

  pell-mell