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Keep "chthonian" when the sentence already sounds natural, when a synonym would add unintended emphasis, or when readers need the most familiar wording. A synonym should clarify or sharpen the message, not simply make the sentence look more varied.
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5 total sentences available.
Consus, moreover, is regarded as a god of the lower world, or Chthonian divinity—another circumstance which connects him with Poseidôn, whose character becomes more and more Chthonian the farther his cultus is traced into the East, where also his phase as lord of knowledge and wisdom appears more manifestly.
Source: wiktionary
...I intend to apply the name chthonian to all gods and spirits of the earth, whether their functions are concerned with agriculture or with the grave and the world beyond, or (as often) with both.
Source: wiktionary
The Olympian religion is truly Olympian when it rests on Chthonian grounds, and the Chthonian religion is truly Chthonian when it stands in the Olympian light.
Source: wiktionary
Even an “Olympian” deity such as Athena Polias at Athens may have chthonian features, such as her association with the snake, a creature symbolic of the earth.
Source: wiktionary
Showing 4 of 5 available sentences.
Closest matches include acherontic, animal worshiper, anthropolater, arborolater, archaeolater.
Compare the replacement against real sentence context. This entry includes sample sentences so you can check tone, grammar, and meaning before swapping words.