pact (between A and B) | pact (with somebody) (to do something) a formal agreement between two or more people, groups or countries, especially one in which they agree to help each other a non-aggression pact They have made a pact with each other not to speak about their differences in public. a suicide pact (= an agreement by two or more people to kill themselves at the same time) The two parties agreed an electoral pact. Word Origin late Middle English: from Old French, from Latin pactum
‘something agreed’, neuter past participle (used as a noun) of paciscere ‘agree’.Extra examples He made a pact with the devil. She died with her lover in a suicide pact. She made a pact with her friend never to tell anyone what had happened. The Liberals formed a secret pact with the Independents. The Social Democrats struck an electoral pact with the Liberals. The Soviet Union had signed a non-aggression pact with Germany. a defence pact between Pakistan and France conditions under the recently signed non-aggression pact He helped to negotiate a non-aggression pact between the two countries. The two parties agreed on an electoral pact. Under the terms of the pact, they were only able to operate a limited number of boats.