Examples from the Web for portentously
And then all this gets underlined and italicized by a portentously romantic score.
Portentously, the opposition consisted of communists, liberals, fascists, and a well-off middle class.Leslie H. Gelb on a World in Crisis—and What Obama Should Do|Leslie H. Gelb|December 14, 2011|DAILY BEAST
The lad seems to wish to make up for the natural insignificance of his face by frowning on all occasions most portentously.George Cruikshank|William Makepeace Thackeray
"I believe that young Mangan is simply a Rebel" resumed Mrs. Kirby, portentously.Mount Music|E. Oe. Somerville and Martin Ross
Stinson and Mathews, who were supposed to be out of it anyway, winked at each other portentously.The Woman from Outside|Hulbert Footner
The face of Miss Greene, portentously grave, was peeping through the jar.Mrs. Korner Sins Her Mercies|Jerome K. Jerome
In her stead, Mrs. Marrable portentously approached the stage, with an open letter in her hand.No Name|Wilkie Collins
British Dictionary definitions for portentously
Word Origin and History for portentously
1540s, from Latin portentosus "monstrous, marvelous, threatening," from portentem "portent" (see portend). Related: Portentously.