The antonyms for the term "more underivative" are numerous. If something is not underivative, then it is derivative, banal, common, hackneyed, unoriginal, trite, ordinary, stale, or cliched. These words all describe items that lack originality or freshness. While it can sometimes be difficult to come up with new ideas, it is important to strive for creativity and uniqueness when creating new products or materials. If everything were underivative, the world would be a boring and monotonous place. Therefore, it is crucial to seek out new and inspiring ways to create and innovate.