Definition: not thinking about the possible bad results of what you are doing Level: B2
不锁门是不负责任的！
Leaving the door unlocked was ___irresponsible!
他不负责任的行为引起了很多麻烦。
His ___irresponsible behavior caused a lot of trouble.
你不能总是依赖那些不负责任且粗心的司机。
You can't always rely on drivers who are ___irresponsible and careless.
