What are the opposite words for original?

Original, as a word, denotes a sense of uniqueness and novelty, which can be juxtaposed with its antonyms- derivative and copied. A derivative work is created by basing it on already existing works, making it unoriginal. Similarly, a copied work is one that is done by mimicking or duplicating someone's idea, depriving it of originality. Another antonym for original can be traditional, which signifies a customary and conventional approach to a particular thing. However, the traditional approach is also sometimes considered unoriginal as it does not incorporate any new ideas or creativity. Therefore, the antonyms for "original" are derivative, copied, and traditional.