Noun irresponsibleness has 1 sense
  1. irresponsibility, irresponsibleness - a form of untrustworthiness; the trait of lacking a sense of responsibility and not feeling accountable for your actions
    --1 is a kind of untrustworthiness, untrustiness
    Antonyms: responsibility, responsibleness
    --1 has particulars:
     undependability, undependableness, unreliability, unreliableness; flightiness, arbitrariness, whimsicality, whimsy, whimsey, capriciousness; carefreeness
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