portentous in a sentence

Definition

Portentous: giving a sign or warning that something significant or ominous is likely to happen.

The dark clouds rolling in were a portentous sign of the storm to come.
His portentous tone suggested that the news would not be good.
As the clock struck midnight, the portentous silence filled the air with dread.
The ancient prophecy spoke of a portentous event that would change the course of history.
She felt a portentous chill as she entered the abandoned house, sensing something was wrong.