The term "top-echelon" refers to a high-ranking or upper-level group of people or organizations. Some synonyms for this term could include "upper crust," "elite," "privileged," "high society," "upper class," "aristocracy," "cream of the crop," or "creme de la creme." These words all suggest a group of people or institutions that are highly regarded and respected for their accomplishments, status, or prestige. Whether in the world of business, politics, or society, being a part of the top-echelon typically means that one has achieved a level of success and recognition that sets them apart from the rest.