uxoricide

It’s not as if the idea of uxoricide was unknown in that world.

"This is a case of diabolical and ghastly uxoricide," said Judge M Manoj, referring to the murder of a wife.

A long orchestral climax builds slowly before Bluebeard grants the key to door No. 7, as Judith declares she now knows that the rumors of uxoricide are true.

It isn't uxoricide or sheep-stealing—not to know Melville—but it's the deadly sin of ingratitude.