A summit meeting is a high-level gathering of political leaders, usually taking place between nations or organizations. However, there are several synonyms for this term that can help to diversify language and convey different nuances of meaning. Some of the most common synonyms for "summit meeting" include "conference," "conclave," "summit," "forum," and "assembly." Each of these terms has its own distinct connotations and implications, ranging from a formal or structured event to a more casual or informal gathering. Overall, the choice of synonym will depend on the context, audience, and desired tone of the message being conveyed.