unterrestrial

English

Etymology

un- +‎ terrestrial

Adjective

unterrestrial (comparative more unterrestrial, superlative most unterrestrial)

1. 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 […]