Synonyms|367Antonyms|96|Broader|9Narrower|15Related|697

181 entries under adjective topic. ×

1
of great moment(importance, valuable, main, notable)
1
of importance(importance, valuable, main, notable)
1
on the map(importance, valuable, main, notable)
1
powerful
1
profound
1
provocative
1
staggering
1
stunning
1
suggestive(exciting, foreboding)
1
surpassing
1
surprising
1
thrilling(exciting, foreboding)
1
urgent
0
arousing
0
burning
0
charged
0
clouded
0
colossal
0
comminatory
0
compelling
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APASmart Define. (2015). portentous thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/portentous/thesaurus/synonyms
ChicagoSmart Define. 2015. "portentous thesaurus" https://smartdefine.org/portentous/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, portentous thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/portentous/thesaurus/synonyms>.
MLASmart Define. "portentous thesaurus" 10 April 2015. Web. 29 September 2026. <https://smartdefine.org/portentous/thesaurus/synonyms>