1. self-righteously moralistic or superior in a way that is annoying or offensive to others
Usage: often used critically or disapprovingly

Examples

• His priggish attitude about not drinking alcohol made him unpopular at parties.
• She gave a priggish lecture about proper etiquette that annoyed everyone in the room.
• The priggish tone of his email made it clear he thought he was morally superior.
• He had a priggish way of correcting others' grammar at every opportunity.
• Her priggish disapproval of casual language seemed outdated and judgmental.
• The character's priggish behavior in the novel made readers dislike him intensely.