adjective
- Of momentous or ominous significance.
- usage: "such a portentous... Monster raised all my curiosity- Herman Melville; "a prodigious vision"
- synonyms: prodigious
- Ominously prophetic.
- synonyms: fateful, foreboding
- Puffed up with vanity."a grandiloquent and boastful manner"; "overblown oratory"; "a pompous speech"; "pseudo-scientific gobbledygook and pontifical hooey- Newsweek
- synonyms: grandiloquent, overblown, pompous, pontifical
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). portentous. Retrieved September 21, 2026, from http://smartdefine.org/portentous/definitions/1181086 |
| Chicago | WordNet. 2010. "portentous" http://smartdefine.org/portentous/definitions/1181086 (accessed September 21, 2026). |
| Harvard | WordNet 2010, portentous, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/portentous/definitions/1181086>. |
| MLA | WordNet. "portentous" 23 October 2010. Web. 21 September 2026. <http://smartdefine.org/portentous/definitions/1181086> |