underearth

English

Etymology

under- +‎ earth

Adjective

underearth (not comparable)

1. Beneath the earth; underground.
   • 1954, Keats-Shelley Journal, volumes 3-4, page 8:

     The sleep-healing takes place, shortly before the end of the poem, in the "Cave of Quietude," an underearth cavern that is environed by "hell."

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