What is another word for most cupriferous?
Pronunciation: [mˈə͡ʊst kʌpɹˈɪfəɹəs] (IPA) 
The phrase "most cupriferous" refers to something that contains a high amount of copper. However, there are several alternative terms that could be used in place of this phrase. For instance, one might describe something as copper-rich, copper-dense, or copper-laden. Alternatively, the phrase "most copper-laden" could be used to convey the same meaning. Other possibilities include "copper-heavy," "copper-abundant," and "copper-filled." Ultimately, the choice of synonym will depend on the context of the situation and the tone of the writing. Nonetheless, using any of these options can help to add variety and depth to one's language.
