What is another word for most chthonic?
Pronunciation: [mˈə͡ʊst sˌiːˈe͡ɪt͡ʃθˈɒnɪk] (IPA) 
The term "most chthonic" refers to something that is deeply rooted in the earth or the underworld. Synonyms for this phrase may include "most subterranean," "most infernal," "most abyssal," or "most netherworldly." These words all describe something that is dark, mysterious, and hidden from the surface world. "Most Stygian" or "most Hadean" also evoke the underworlds of Greek mythology, adding a mythic element to the description. Ultimately, the synonyms for "most chthonic" all suggest a connection to the deepest, most ancient aspects of the natural world, which can be both awe-inspiring and terrifying.
