reckless
/ˈreklɪs; `rɛklɪs/ adj
~ (of sth) (of people or their actions) not thinking of the consequences or of danger; rash or impulsive （指人或其行为）不考虑後果的, 不顾危险的, 鲁莽的, 由冲动引起的
a reckless spender, gambler, etc 乱花钱的人、 乱赌博的人
fined 100 for reckless driving 因鲁莽驾驶罚款100英镑
He's quite reckless of his own safety. 他完全不顾及自己的安全.