1. in a manner that involves making moral judgments or delivering moral lessons, often in a self-righteous or preachy way
Usage: typically carries a negative or critical connotation, suggesting excessive or unwanted moralizing

Examples

• She spoke moralizingly about the dangers of social media to her teenage children.
• The critic moralizingly condemned the film for its lack of ethical messaging.
• He moralizingly lectured his friends about their lifestyle choices.
• The author moralizingly inserted her political views into the narrative.
• She responded moralizingly, as if she alone understood right and wrong.
• The teacher moralizingly explained why cheating was unacceptable.