Antonyms for the word "most untrodden" include "well-trodden", "frequented", "well-worn", "trodden", and "familiar". These antonyms suggest the opposite of "untrodden" which means untouched, undiscovered, or unexplored. The idea of something being well-trodden conveys a sense of familiarity and commonness, which is the opposite of what "untrodden" represents. The term "frequented" adds a sense of regularity and popularity, while "well-worn" conveys the idea of something being used or visited frequently. "Trodden" suggests an act of traveling on a path, and "familiar" implies that something is well-known and recognized.