An act of courtesy is a gesture that is intended to show kindness or respect to others. Some synonyms for this phrase include polite act, gesture of goodwill, polite gesture, and kind gesture. Other similar phrases include acts of kindness, acts of respect, and acts of generosity. Whether it's holding the door open for someone, offering to help with a task, or simply saying please and thank you, acts of courtesy are an important part of everyday social interactions. Performing these small acts of kindness and respect can go a long way in improving relationships with others and creating a positive, harmonious environment in which to live and work.