1. nightmarish - Adjective
2. nightmarish - Adjective Satellite
extremely alarming
Source: WordNetThe bicycle is the most civilized conveyance known to man. Other forms of transport grow daily more nightmarish. Only the bicycle remains pure in heart. Iris Murdoch
Look into the eyes of a chicken and you will see real stupidity. It is a kind of bottomless stupidity, a fiendish stupidity. They are the most horrifying, cannibalistic and nightmarish creatures in the world. Werner Herzog
The industrial animal factory offers a nightmarish glimpse of what capitalism is capable of in the absence of any moral or regulatory constraint whatsoever. Michael Pollan
I got the idea for the pilot while walking through an empty lot of a movie studio. There were all the evidences of a community but with no people. I felt at the time a kind of encroaching loneliness, and desolation; a feeling of how nightmarish it would be to wind up in a city with no inhabitants. Rod Serling
During my nightmarish time in a coma, 11 days long, you kept appearing in my dreams, wild, you and Slava, like gypsies & always too late. You were a two-man orchestra & we were always looking for you and waiting for you. Jean Tinguely
I really can't be bothered going to a barber. And shaving every morning, that's nightmarish. I spent my teenage years covered in tiny little bits of toilet paper. Alan Moore