SiC: Peck·sniff·i·an

[D] Peck·sniff·i·an

adjective ( often lowercase )

hypocritically and unctuously affecting benevolence or high moral principles.

[MW] Origin of PECKSNIFFIAN

Seth Pecksniff, character in Martin Chuzzlewit(1843–44) by Charles Dickens

First Known Use: 1849