Definition of "portentousness" [portentousness]

• The quality of being portentous (noun)

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• "Over a long career, she has perhaps too easily found much to despair of both in her own country and abroad—and her portentousness can be tiresome."
• "For the elements of Gauguin's mystique are apparent enough: a portentousness of pose or motif, a figure catching one's eye with a look of grave interrogation, a woman foursquare and impassive as an oceanic statue."
• "I was walking around the kitchen all last night going "Hypsizygus tessellatus!" with great portentousness and magnificent gesticulations."