1. the practice of exchanging things with others for mutual benefit, especially privileges granted by one country or organization to another
2. a mutual or cooperative interchange of favors or privileges

Examples

• The trade agreement was based on reciprocity between the two nations.
• She expected reciprocity in their friendship but felt she was always giving more.
• The principle of reciprocity governs many international relationships.
• Without reciprocity, the partnership would be unfair to one side.
• The company offered reciprocity by matching employee charitable donations.
• Diplomatic reciprocity requires that both countries treat each other’s citizens equally.