1. having very strict moral attitudes; prudish or excessively proper in behavior

Examples

• Her straitlaced grandmother disapproved of dancing and card games.
• The straitlaced principal banned all music with explicit lyrics.
• Despite his straitlaced appearance, he had a good sense of humor.
• The small town had a straitlaced attitude toward modern fashion.
• She found her straitlaced upbringing difficult to overcome in college.
• The straitlaced community was shocked by the artist's bold paintings.