justifiable
adj. 情有可原的，无可非议的
例句
When, if ever, is it morally justifiable to allow a patient to die?
假如可以的话，什么情况下允许病人放弃生命在道德上是正当的？
《柯林斯英汉双解大词典》
At such times, winning may dominate one's intellect, and every action, no matter how gross, may be considered justifiable.
在这种情况下，胜利可能会影响一个人的判断能力，使得无论多么粗野的行为，都可能被正当化。
At least two of the three other absentees also had justifiable reasons for being away.
其他三个缺席者中至少两个人也有合理的缺席理由。
