(a.) Hideous; ghastly; as, an eldritch shriek or laugh.

arcane awe-inspiring awesome awful awing bizarre blue cadaverous corpselike crawly creepy deadly deathlike deathly deathly pale dreadful eldritch esoteric extramundane extraterrestrial fantastic fey frightening ghastly ghostlike ghostly grisly grotesque gruesome haggard hypernormal hyperphysical livid lurid macabre mortuary mysterious numinous occult otherworldly pale preterhuman preternatural preternormal pretersensual psychic scary spectral spiritual spookish spooky strange superhuman supernatural supernormal superphysical supersensible supersensual supramundane supranatural transcendental transmundane uncanny unco uncolike unearthly unhuman unworldly wan weird