1. irresponsible showing lack of care for consequences
  2. responsible worthy of or requiring trust; held accountable
  3. responsive reacting to a stimulus
  4. irresponsibly in an irresponsible manner
  5. unresponsive not reacting to some influence or stimulus
  6. expansively in an impressively expansive manner
  7. expensively in an expensive manner
  8. responsibility the social force that binds you to a course of action
  9. responsibly in a responsible manner
  10. response the speech act of continuing a conversational exchange
  11. irresponsibility the trait of lacking trustworthiness or reliability
  12. expensive high in price or charging high prices
  13. inexpensively with little expenditure of money
  14. expansive able or tending to extend in one or more directions
  15. extensively in a widespread way
  16. unresponsiveness the quality of being unresponsive
  17. expressively with expression; in an expressive manner
  18. suspenseful characterized by or causing excited anticipation
  19. respectively in the order given
  20. irresponsibleness a form of untrustworthiness