a. full of unspecifiable significance; exciting wonder and awe; wonderful
He waited imperiously for their attention before he began his carefully composed talk, delivered in portentous tones.
Sentence in Classic:
The effect was also further heightened by the manner in which, at such moments, he assumed the most portentous frown.
Dead Souls By Nikolai Vasilievich Gogol Context
But scarce was this done ere the portentous strength of the Black Knight forced his way inward in despite of De Bracy and his followers.
But what most puzzled and confounded you was a long, limber, portentous, black mass of something hovering in the centre of the picture over three blue, dim, perpendicular lines floating in a nameless yeast.
Moby Dick By Herman Melville Context
Yet shall you not wall round your ordained city, ere this murderous outrage on us compel you, in portentous hunger, to eat your tables with gnawing teeth.
Because from such arms conquests come but slowly, long delayed and inconsiderable, but the losses sudden and portentous.
The Prince By Nicolo Machiavelli Context
The lieutenant, returning from a tour after a bandage, produced from a hidden receptacle of his mind new and portentous oaths suited to the emergency.
The Red Badge of Courage By Stephen Crane Context