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• s  being or operating under the surface of the earth
• s  lying beyond what is openly revealed or avowed (especially being kept in the background or deliberately concealed)

• They practice husbandry and agriculturesome species keep herds of aphids and others grow subterraneous gardens of fungi.
• But from some of its subterraneous horror he shies off, some of it eludes him, and the rest comes through merely as melodrama.
• They practice husbandry and agriculturesome species keep herds of aphids and others grow subterraneous gardens of fungi.

• subterranean
• ulterior