open sesame

something that allows someone to achieve a desired goal it turned out that a simple “please” was the open sesame for charming the hotel manager into giving us a room with a better view Synonyms gateway, key, passport, secret, ticketRelated Words password; accomplishment, achievement, attainment, coup, success, triumph; approach, manner, means, method, style, system, technique, way; blueprint, design, ground plan, plan, program, scheme, strategy