| Synonym Collection v1.1 | ||
| Main Entry: | portentous | |
| Part of Speech: | adjective | |
| Synonyms: | exciting, foreboding, looming, monstrous, ominous, pompous, premonitory, pretentious, prodigious, significant, weighty | |
| Roget's II: The New Thesaurus | ||
| Main Entry: | fateful | |
| Part of Speech: | adjective | |
| Definition: | Portending future disaster. | |
| Synonyms: | apocalyptic, apocalyptical, baneful, dire, direful, fire-and-brimstone, grave, hellfire, ominous, unlucky | |
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