The term "re-produced" indicates the act of creating something again or multiple times. Antonyms for "re-produced" would, therefore, relate to the opposite of recreating or duplicating. One of the antonyms for "re-produced" is "original," which means the item or content is unique and not reproduced. Another antonym could be "destroyed," which indicates that something has been eliminated or taken away. Alternatively, "unrecorded" could serve as an antonym to "re-produced" as it implies that there is no record of the item or content before, and therefore, it can't be duplicated. Furthermore, words like "innovate" and "invent" also act as antonyms, as they deal with creating something new rather than reproducing something pre-existing.