From the belfries far and near the funereal deathbell tolled unceasingly while all around the gloomy precincts rolled the ominous warning of a hundred muffled drums punctuated by the hollow booming of pieces of ordnance.
There are no more uses of "ominous" in the book.
Show samples from other sources
I’m beginning to hear ominous rumblings of discontent.
With the clouds looking so ominous, I’m afraid there will be a bad storm.