IPA: /pɔːrˈtɛntəsnəs/
KK: /pɔrˈtɛntəsnəs/
The quality of being significant or foreboding, often suggesting that something important or ominous is about to happen.
The portentousness of the dark clouds made everyone anxious about the storm.
Portentousness → It is formed from "portent" (from Latin "portentum", meaning a sign or omen) and "-ous" (meaning full of) and "-ness" (meaning a state or quality). The word "portentousness" refers to the quality of being full of signs or omens, often implying something significant or foreboding.
Think of 'portent' as a sign or omen, and remember that 'portentousness' means the quality of being full of such signs.