- nightmarish
- adj1. disquieting, disturbing, frightening, frightful, fear-inspiring, Inf. scary; alarming, startling, dismaying, astounding, appalling; kaf-kaesque, terrifying, terror-inspiring, terror-fraught, horrible, horrid, horrific, awful; dire, fell, dreadful, ghastly, grim, appalling, shocking, creepy; petrifying, harrowing, rending, racking; excruciating, agonizing; odious, execrable, repulsive, forbidding, abhorrent, enough to drive one mad.2. exasperating, annoying, irritating, provoking, mortifying, galling; plaguing, bothering, bothersome, harassing; worrying, worrisome, tormenting, haunting.
A Note on the Style of the synonym finder. 2014.