The word "portentous" in English means: Ominously significant or indicative, especially with regard to the future; foreshadowing important events., Pompously or affectedly solemn; trying to seem very important, serious, or impressive..
The phonetic transcription of "portentous" is /pɔːˈtentəs/ in British English and /pɔːrˈtentəs/ in American English. Click the 🔊 button to hear both pronunciations.
Synonyms for "portentous": ominous, threatening, ill-omened, significant, solemn, pompous.
Example usage of "portentous": "The dark clouds looked portentous.". More examples on the page.