unjustifiably
不合理的
* 以上结果来自机器翻译。
If you describe an action, especially one that harms someone, as unjustifiable, you mean there is no good reason for it.
Using these missiles to down civilian aircraft is simply immoral and totally unjustifiable.
用这些导弹击落民用飞机是极不道德也是完全没道理的。
1. without any excuse;