Synonyms and Antonyms for Nightmarish

Following is a list of 150 synonym words and phrases that are related to nightmarish:

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4 Letter Words

grim

5 Letter Words

awfulbleakscaryeeriewackyweirdlurid

6 Letter Words

grislyhorridbrutaltragicsordiddismalfreakyinsanecreepyordealwhacky

7 Letter Words

hellishghastlybizarresurrealhideouschaoticominousruinousstrangemacabrebizzarebizarroghostlyoneiricdireful

8 Letter Words

alarmingfearsomehorrificdreadfulhorriblegruesometerribleperilousfreakishdizzyinghauntingfarcicalwretchedgodawfulfrenziedtortuoussinistermenacingscariestdevilishmonsterydreamishfearlikeuglysomemasklikedemonishdawnlike

9 Letter Words

appallingharrowinggrotesquetorturousdreamlikeunnervingfrightfulmaddeningtroublingmonstrousmurderousunrestfulloathsometraumaticatrociousnightlikefiendlikedemonlikedeathlikemonsterlyvomitlikeghostlikegoblinishdreadsomekillerish

10 Letter Words

terrifyingdepressinghorrifyinghorrendouscalamitousdisastrousdisturbingunsettlingunpleasanthellaciouskafkaesquetumultuousphantasmicdiabolicalabominableanguishingnightmareyphantasmalwraithlikeshadowlikefrightsomebugbearishhorrorsomemonsterfulhorrificalgoblinlike

11 Letter Words

frighteningdistressingfantasticalbewilderingapocalypticunspeakabledisquietingdisasterousconfusionaltroublesomemonsterlikehallucinoidvampirelikemidnightishvampiresquephantomlikespecterlike

12 Letter Words

hair-raisingsurrealistichorrifyinglyunimaginablediscomfitinghorrificallyterrifyinglyexcruciatingcatastrophicunfathomablenightmariousnocturnelikecthulhuesque

13 Letter Words

bloodcurdlinghallucinatoryapocalypticalnightmarelikesemimonstrous

14 Letter Words

phantasmagoricblood-curdling

16 Letter Words

phantasmagorical

Using this list of similar-meaning words, you can choose the best synonyms to replace nightmarish in your sentences.

Additionally, you'll find antonyms included, perfect for when you need the complete opposite meaning of nightmarish in your writing.