1. having very strict moral attitudes; prudish or excessively proper in behavior
Usage: often used disapprovingly

Examples

• Her straightlaced parents disapproved of her choice to study art instead of medicine.
• The straightlaced principal banned dancing at the school social.
• Despite his straightlaced appearance, he had a good sense of humor.
• The town's straightlaced community was shocked by the modern art exhibition.
• She found her straightlaced upbringing difficult to overcome in college.
• His straightlaced attitude made him unpopular with his more relaxed colleagues.