characterized by iniquity; wicked because it is believed to be a sin
"iniquitous deeds"
"he said it was sinful to wear lipstick"
"ungodly acts"
far more than usual or expected
"an extraordinary desire for approval"
"it was an over-the-top experience"
constituting a sin; being morally or religiously wrong; wicked; evil
"After seeing his brother suffer for years, he felt that keeping silent about the injustice was sinful."