Subterrestrial

adj, noun

adj, noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Someone who lives under the earth.
Adjective
  1. 1
    Under the earth; subterranean. not-comparable

Etymology

From sub- + terrestrial.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.