recklessness
🇺🇸
/ˈrekləsnəs/
🇬🇧
/ˈrekləsnəs/
The quality of being careless and not thinking about the possible negative outcomes of your actions.
His recklessness caused the accident, as he didn't consider the consequences of his actions.
彼の無謀さは事故の原因となり、彼は自分の行動の結果を考慮していなかった。