The antonyms for the word "most transformed" would be "least changed," "unchanged," "unaltered," or "static." When something has undergone minimal or no alteration, it can be described as "least changed." Similarly, if something has not gone through any transformation at all, it can be described as "unchanged." Conversely, if something has remained the same throughout time, it can be referred to as "unaltered." And if something is in a state of permanence, it can be referred to as "static." These antonyms are useful in describing situations or objects that lack transformation, which is the opposite of the most transformed.