Seth Pecksniff, a character with a holier-than-thou attitude in Charles Dickens's 1844 novel Martin Chuzzlewit, was no angel, though he certainly tried to pass himself off as one. Pecksniff liked to preach morality and brag about his own virtue, but in reality he was a deceptive rascal who would use any means to advance his own selfish interests. It didn't take long for Pecksniff's reputation for canting sanctimoniousness to leave its mark on English; "Pecksniffian" has been used as a synonym of "hypocritical" since 1849.
Examples of Pecksniffian in a Sentence
a Pecksniffian pandering to religious conservatives, especially in the weeks before the election