181 entries under adjective topic. ×

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dangerous(hazardous, troubling)
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earth-shaking
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evocative
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fated(exciting, foreboding)
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high-priority
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imminent
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jeopardous
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laden
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looming
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louring
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minatorial
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moving
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of concern
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parlous
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predetermined
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puffed-up
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rare
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signal
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stimulating
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tall
11 years ago|12k views|share |citing 
APASmart Define. (2015). portentous thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/portentous/thesaurus/synonyms
ChicagoSmart Define. 2015. "portentous thesaurus" https://smartdefine.org/portentous/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, portentous thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/portentous/thesaurus/synonyms>.
MLASmart Define. "portentous thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/portentous/thesaurus/synonyms>