Sunday vs dressy

Sunday

• On Sundays. 

• A comic strip published in a Sunday newspaper. 

• The first day of the week in many religious traditions, and the seventh day of the week in systems using the ISO 8601 standard; the Christian Sabbath; the Lord's Day; it follows Saturday and precedes Monday. 

• A newspaper published on Sunday. 

• To spend Sunday (at a certain place, with a certain person or people, etc.). 

dressy

• Fond of dressing up; keen on fashion. 

• Elegant, smart, or stylish.