Definition
A "plaster saint" refers to someone who appears virtuous and pious on the surface but is actually hypocritical or flawed in reality. Think of it as someone who pretends to be morally superior but doesn't live up to that image. It's a derogatory term implying insincerity. Unlike a genuine saint, a plaster saint is more concerned with appearances. They may act holy to gain approval or hide their true nature. The term suggests a lack of authenticity.