knavishness

Example:His deceit was evident in the way he changed the story multiple times.

Definition:a deliberate act of presenting a false appearance or making a misleading statement

Example:He confessed to a series of misdeeds that had tarnished his reputation.

Definition:an unlawful act or a serious wrongdoing

Example:The iniquity of his actions was so egregious that he faced severe legal consequences.

Definition:a grave wrong or immoral act; a serious sin or crime