inexcusably
adv. 无法原谅地；无法辩解地
例句
She had been inexcusably careless.
她曾粗心大意得不可原谅。
《柯林斯英汉双解大词典》
The defending has been inexcusably bad at times.
防守有时候真是让人看不懂了。
That was inexcusably stupid, and will set back your plans quite a bit.
那是无法原谅地愚蠢，而且将相当向后地设定你的计划一点点。
