Transformed means to change or alter completely, but antonyms for the word 'transformed' can be words that denote maintaining the original shape, structure, form, or composition of something. Some antonyms for transformed are "preserved," "maintained," "conserved," "unmodified," and "unchanged." These words imply keeping something in its original state and not modifying it in a significant way. For example, a historical building can be preserved or maintained without undergoing significant changes to keep its original structure and historical significance. In contrast, transformed refers to a considerable change or alteration in form, shape, structure, or composition. Therefore, antonyms of transformed imply maintaining its original state with little or no alteration.