Synonyms|367Antonyms|96|Broader|9Narrower|15Related|697
1
exhilarating(adjective, exciting, foreboding)
1
fell
1
festival
1
fire-and-brimstone(adjective, warn, luck)
1
forerunning
1
fustian(adjective, pompous)
1
ghastly
1
haunting(adjective, exciting, foreboding)
1
hopeless
1
horrific
1
ineffable
1
intimidating
1
intriguing(adjective, exciting, foreboding)
1
legendary
1
luxurious(great, excellent, superb, super, groovy)
1
mantic
1
minacious
1
monstrous
1
mythical
1
noteworthy
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APASmart Define. (2015). portentous thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/portentous/thesaurus/synonyms
ChicagoSmart Define. 2015. "portentous thesaurus" https://smartdefine.org/portentous/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2015, portentous thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/portentous/thesaurus/synonyms>.
MLASmart Define. "portentous thesaurus" 10 April 2015. Web. 28 September 2026. <https://smartdefine.org/portentous/thesaurus/synonyms>