1
head trip(noun, expression, concept, understanding, desire)
1
heartbreak(noun, trouble, bother, blow, distress)
1
hell-fire(noun, difficulty, misery, trial, grave)
1
hideous
1
holy terror
1
horrendous(adjective, terrible, frightening, traumatic, terrifying)
1
horribleness(noun, awful, terrible, fear, terror)
1
horridness(noun, awful, terrible, fear, terror)
1
horrification(noun, awful, terrible, fear, terror)
1
hurt(noun, torment)
1
idea(noun, concept, understanding, desire, fancy)
1
image(noun, desire, fancy, spirit, idea)
1
imagination(noun, concept, understanding, desire, fancy)
1
imaginativeness(noun, desire, fancy, hope, image)
1
impedimenta
1
inconvenience(noun, trouble, bother, blow, distress)
1
infernal regions(noun, expression, misery, grave, inferno)
1
inferno(noun, difficulty, misery, trial, grave)
1
invention(noun, desire, fancy, hope, image)
1
irritation(noun, trouble, bother, blow, distress)
<1678910>
10 years ago|23k views|share |citing 
APASmart Define. (2016). nightmare thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/nightmare/thesaurus/synonyms
ChicagoSmart Define. 2016. "nightmare thesaurus" https://smartdefine.org/nightmare/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2016, nightmare thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/nightmare/thesaurus/synonyms>.
MLASmart Define. "nightmare thesaurus" 29 February 2016. Web. 24 September 2026. <https://smartdefine.org/nightmare/thesaurus/synonyms>