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n. the habitual failure to behave in a responsible manner; irresponsibility.

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

"Her transient irresponsibleness and mischievousness are then cited as everyday, persistent vices."

untrustiness    untrustworthiness   

whimsicality    capriciousness    undependableness    undependability    unreliability   

irresponsibility