irresponsibility
Definitions
The state or quality of being irresponsible; lack of a sense of duty or accountability.
An act or instance of failing to act in a reliable or trustworthy manner.
Examples
The accident was caused by the driver's sheer irresponsibility behind the wheel.
His irresponsibility regarding the project deadlines led to his eventual dismissal from the team.
Synonyms
carelessness negligence recklessness immaturity dereliction of duty lack of accountability thoughtlessness
Antonyms
responsibility accountability reliability dependability maturity conscientiousness dutifulness