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OET→nightmarish

nightmarish

Flag: gbEnglishOxford English Thesaurus
nightmarish
adjective
Grant fired at the nightmarish, clawing figure before him:
unearthly, monstrous, ghostly, spine-chilling, horrific, macabre, hideous, unspeakable, gruesome, grisly, ghastly, harrowing, hair-raising, disturbing, Kafkaesque;
informal scary, creepy;
rare phantasmagorical.
nightmarish Oxford Dictionary of English