无可厚非的英文：
[Literal Meaning]
not/can/over/reproach
beyond reproach

[解释]
厚：重；非：否定。没有什么可过分指责的。

[Explanation]
to give no cause for much criticism

[例子]
这件事李明有自己选择的权利，无可厚非。

[Example]
For this Li Ming has the right to make his own choice and there is nothing to be said against it.

[英文等价词]
beyond challenge

His manners are beyond reproach.
他的举止无可厚非。