The term "re duplicating" means to duplicate, reproduce or replicate something again. The antonyms or opposite words for this term are "original," "unique," "one-of-a-kind," "singular," and "exclusive." These terms describe something that is not duplicated or replicated and is entirely distinct from anything else. In contrast to re-duplicating, these antonyms suggest something that is rare or exceptional, such as a masterpiece artwork or a rare book. So, while re-duplicating involves making something identical to another, the antonyms for this term evoke ideas of individuality, creativity, and originality.