There are several synonyms that can be used in place of the word "mycophagist," which refers to someone who eats mushrooms as their main source of food. Some potential alternatives include "mushroom eater," "fungivore," "mycophage," "mushroom devotee," and "mycologist." Each of these terms captures a different aspect of the relationship between people and mushrooms, whether it is a casual preference for the taste of mushrooms or a deeper expertise in the study of fungi. Ultimately, the word you choose will depend on the context and audience, as well as your own personal style and voice.