unterrestrial

unterrestrial

(ˌʌntəˈrɛstrɪəl)
adj
not terrestrial; not of or pertaining to this world; other-worldly; extra-terrestrial; heavenly
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014