Of or relating to the underworld.
Of or relating to the deities, spirits, and other beings dwelling under the earth.
[Origin: from Greek khthonios in or under the earth, from khthōn earth.]
“What’s bi-sub syndrome, anyway?” “Don’t know. I tried to look up some of Dr. Abraham’s work and found something titled ‘The Evolution of Hierarchical Behavior Expressed Through Chthonic Fetishization,’ and gave up after that. I don’t speak academic fluently enough.” – The Killer Wore Leather, Laura Antoniou.