1. polite behavior that shows respect for other people
2. a polite or helpful act
3. something provided free of charge as a gesture of goodwill
Usage: often used in ‘courtesy of’

Examples

• She always treats her guests with courtesy and respect.
• It’s common courtesy to hold the door open for someone behind you.
• He had the courtesy to call before arriving.
• The hotel provides a courtesy shuttle to the airport.
• The refreshments were served courtesy of the sponsor.
• Please extend the courtesy of listening when others speak.
• They offered us the courtesy of a free upgrade.