The word "most unmodified" refers to something that is unchanged or unaltered to the greatest extent possible. Its antonyms, on the other hand, signify the opposite. The antonyms of "most unmodified" include "completely modified," "fully altered," and "wholly transformed." Other antonyms could be "entirely revamped," "totally changed," or "thoroughly converted." These words indicate that the object or subject in question has undergone considerable modifications and is vastly dissimilar to its original form. The antonyms for "most unmodified" demonstrate the opposite meaning by indicating that something has been modified or transformed in varying degrees, leaving no aspect unchanged.