More quaternary refers to something that is even more advanced or complex than the already complex quaternary. Synonyms for more quaternary can include intricate, sophisticated, elaborate, multifaceted, multifarious, nuanced, intricate, and complex. These words all describe something that is not easily understood and requires a high level of expertise to fully comprehend. When referring to scientific or technological advancements, the words futuristic, cutting-edge, and avant-garde can also be used. These synonyms help to convey the idea of something that is beyond the current level of understanding and requires further exploration and development. Overall, the choice of synonyms depends on the specific context in which the term more quaternary is being used.