"characterized by an ostentatious hypocritical display of benevolence or high principle," 1851, after Mr. Pecksniff, character in Dickens' "Martin Chuzzlewit" (1844).
Peck's bad boy
pecker
peckerwood
pecking
peckish
Pecksniffian
pectin
pectinate
pectoral
peculate
peculation
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