她无法原谅丈夫的不忠行为。

She couldn't forgive her husband's ___unfaithfulness.

对标准程序的不遵守导致了产品质量问题。

The ___unfaithfulness to the standard procedures led to quality issues with the product.

牧师谴责会众违背了对上帝的誓言。

The priest denounced the congregation's ___unfaithfulness to their vows to God.