More inartificial refers to something that is less artificial or synthetic, and has a more natural or organic quality. Therefore, antonyms for more inartificial could be words such as artificial, synthetic, fake, or manufactured. These words describe items that are not naturally occurring and may be created from chemicals or other human-made materials. Some other antonyms could be words like processed, refined, or modified, which convey something that has undergone changes or alterations that make it less natural. By understanding the antonyms for more inartificial, we can better understand the qualities a natural product possesses compared to its artificial counterparts.