The phrase "most epizootic" refers to a disease or infection that affects a large number of animals in a particular area. Some synonyms for this phrase include "highly contagious", "widespread", "pandemic", "plague-like", "endemic", and "epidemic". These words all convey the idea that an infectious disease is spreading rapidly and affecting a large population of animals. It is important to note that while these words are similar in meaning, they may have slightly different connotations and usage contexts. By using synonyms for "most epizootic", writers and speakers can vary their language and create more engaging and dynamic content.