Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Pestilential \Pes`ti*len"tial\, a. [Cf. F. pestilentiel.]
Having the nature or qualities of a pestilence. ``Sends the pestilential vapors.''
--Longfellow.-
Hence: Mischievous; noxious; pernicious; morally destructive.
So pestilential, so infectious a thing is sin.
--Jer. Taylor.
Douglas Harper's Etymology Dictionary
late 14c., from Medieval Latin pestilentialis, from Latin pestilentia "plague" (see pestilence). Related: Pestilentially.
Wiktionary
a. Producing pestilence or plague; pestilent.
WordNet
adj. likely to spread and cause an epidemic disease; "a pestilential malignancy in the air"- Jonathan Swift; "plaguey fevers" [syn: pestilent, pestiferous, plaguey]
Usage examples of "pestilential".
Within a few years the local factories had gone but the dumps remained, and the winds that blew in from the sea could send a pestilential stench over the Tar into Petty Coil.
All night long, and throughout the entire city, the scavengers of the law had been at work, and now, as a result, every miserable atom of humanity that had made itself a pestilential offence to society was gathered here to be disposed of according to sanatory moral rules.
They landed upon the farthest shore under a tall red cliff of stone, and Barca Hamilcar died of the shaking fever which he had carried with him from the pestilential lands of the north.
This pestilential Cabrera is not yet quelled, and Morella still holds out.
On the first of May a convocation of Druids was held in the royal palace of the King of Connaught, and two fires were lit, between which cattle were driven, as a preventive of murrain and other pestilential disorders.
Animal fury and orgiastic license here whipped themselves to daemoniac heights by howls and squawking ecstacies that tore and reverberated through those nighted woods like pestilential tempests from the gulfs of hell.
He had a curious recollection of how his knowledge of Inchling and his wife being always in concert, entirely--whatever they might think in private --devoted to him in action, had influenced, if it had not originally sprung, his resolve to cast off the pestilential cloak of obscurity shortening his days, and emerge before a world he could illumine to give him back splendid reflections.
High in the mountains en route to the City of Mexico, the Jalapa air was not poisoned by our pestilential swamps.
I paid my dues to the men of God in Omdurman when I passed that pestilential if holy city.
It took some time to persuade the Key Rabbit that we had really survived the terrible plague of ten thousand pestilential putrescences, but when we coaxed him out from under the bed, we made quite a happy little family group.
And the results will be surprising, for prisons will be less numerous, workhouses, casual wards and asylums less necessary, lazar houses with their pestilential breath will pass away, and England will be happier, sweeter and more free!
How do I know where you come from, and whether you are not some crapulent spy of one of those pestilential committees?
One of them calls the judge another, one curses, and declares that he will curse the Emperors, as pestilential and bloodthirsty tyrants, whom God will soon visit in his wrath.
We have been so long used in Europe to that dreary business of war on the great scale, trailing epidemics and leaving pestilential corpses in its train, that we have almost forgotten its original, the most healthful, if not the most humane, of all field sports--hedge-warfare.
Then, behind her, where stood an array of carven Satans and lamias, the room seemed to recede, the walls and floors dissolved in a seething, unfathomable gulf, amid whose pestilential vapors the statues were mingled in momentary and loathsome ambiguity with the ravening faces, the hunger-contorted forms that swirled toward us from their ultra-dimensional limbo like a devilladen hurricane from Malebolge.