English edit

Etymology edit

From hollow +‎ earth +‎ -er.

Noun edit

hollow earther (plural hollow earthers)

  1. Someone who believes the Earth is hollow.
    • 2001, F. Gwynplaine MacIntyre, Macintyre's Improbable Bestiary, Wildside Press, 24.
      Beware the Hollow-Earther! Beware the troglodytes / They make their homes in catacombs, and prowl on moonless nights . . .