0 in a way that is against the rules of a religion or morally wrong: --
The book is wickedly, sinfully entertaining.
They can't perceive that they are acting hypocritically and sinfully.
Even those projects that were successful were sinfully wasteful.
Served with plenty of double cream and some seasonal berries, it makes a sinfully good pudding.
The desserts are awesomely good: a warm sticky date cake served with ice cream is sinfully rich.
He is born with the capacity to act not only sinfully, but virtuously, by the exercise of his own free will.