unterrestrial

English edit

unterrestrial (comparative more unterrestrial, superlative most unterrestrial)

Not terrestrial.
- 1933, H. P. Lovecraft, The Horror in the Museum:
  Every object that might have been familiar was seen to be part of something vague and unknown and altogether unterrestrial — something infinitely vaster than any human eye could grasp, and infinitely alien, monstrous, and hideous […]