"The old guard" can refer to a group of people or things that hold onto traditional beliefs or ways of doing things. Some synonyms for the term include "traditionalists," "conservatives," "establishment," "elders," and "veterans." Additional terms that can be used to describe individuals who are part of the old guard may include "patriarchs," "doyens," "greybeards," "dinosaurs," or "diehards." It is important to note that these terms can have different connotations, depending on the context in which they are used. However, they all describe individuals or groups who continue to hold onto past practices, rather than embracing new trends or ideas.