Irresponsibility

Ir`re`spon`si`bil´i`ty

n.	1.	Lack of, or freedom from, responsibility or accountability.
	2.	A trait causing one to act without a proper sense of responsibility; acting without giving proper weight to one's responsibilities.

Noun

irresponsibility - a form of untrustworthiness; the trait of lacking a sense of responsibility and not feeling accountable for your actions

Synonyms: irresponsibleness

Antonyms:

responsibleness, responsibility - a form of trustworthiness; the trait of being answerable to someone for something or being responsible for one's conduct; "he holds a position of great responsibility"

arbitrariness, capriciousness, carefreeness, flightiness, irresponsibleness, responsibility, responsibleness, undependability, undependableness, unreliability, unreliableness, untrustiness, untrustworthiness, whimsey, whimsicality, whimsy