A pact is a formal agreement between two or more people, organizations, or governments to do a particular thing or to help each other. Last month he signed a new non-aggression pact with Germany. a formal agreement between two groups, countries, or people, especially to help each other or to stop fighting (pacte, from pactum, from pacisci ). Anti Comintern Pact ANZUS Pact Hoare Laval Pact Kellogg Briand Pact Pact of Paris Lateran Pact Lebanese National Pact Locarno Pact of Warsaw Pact Baghdad Pact Organization German Soviet Nonaggression Pact Nazi Soviet Nonaggression Pact