Virulent

ˈvɪrjələnt

adjective

extremely severe or harmful in its effects

The word 'virulent' often describes something that is highly infectious or harmful. It can be used to indicate a strong and dangerous quality or characteristic.

Roots crawl through the forest floor like a virulent skin disease.

Haruki Murakami

Hard-Boiled Wonderland and the End of the World

Left to herself, the serpent now began To change; her elfin blood in madness ran, Her mouth foam’d, and the grass, therewith besprent, Wither’d at dew so sweet and virulent; Her eyes in torture fix’d, and anguish drear, Hot, glazed, and wide, with lid-lashes all sear, Flash’d phosphor and sharp sparks, without one cooling tear.

John Keats

Poetry

When the reading of Denísov’s virulent reply, which took more than an hour, was over, Rostóv said nothing, and he spent the rest of the day in a most dejected state of mind amid Denísov’s hospital comrades, who had gathered round him, telling them what he knew and listening to their stories.

Leo Tolstoy

War and Peace

Part of their job is to assure terrified Los Angeles residents that the superflu, known as Captain Trips by the young in most areas, is “only slightly more virulent” than the London or Hong Kong strains .

King, Stephen

The Stand

These he had boiled down into a yellow liquid quite unknown to science, which was probably the most virulent poison in existence.

J. M. Barrie

Peter and Wendy

Oy had left Copperhead and was now trying to make Gasher let go of Jake, but Gasher's boot was doing double duty: protecting its owner from the bumbler's teeth, and protecting Oy from the virulent infection which ran in Gasher's blood.

Stephen King

The Waste Lands (The Dark Tower, Book 3)

“Enemy” shall ye say but not “villain,” “invalid” shall ye say but not “wretch,” “fool” shall ye say but not “sinner.” And thou, red judge, if thou would say audibly all thou hast done in thought, then would everyone cry: “Away with the nastiness and the virulent reptile!” But one thing is the thought, another thing is the deed, and another thing is the idea of the deed.

Friedrich Nietzsche

Thus Spake Zarathustra

It was, of course, nothing more than sexism, the especially virulent type espoused by male techies who sincerely believe that they are too smart to be sexists.

Neal Stephenson

Snow Crash

A truly amazing piece of hard times in its most virulent form on a fellow most respectably connected and familiarised with decent home comforts all his life who came in for a cool £100 a year at one time which of course the doublebarrelled ass proceeded to make general ducks and drakes of.

James Joyce

Ulysses

Nowhere, in the thoughts of the Conference, could I find anything as new as ourselves … but then I was on the wrong track, too; I could not see any more clearly than anyone else; and even when Soumitra the time-traveller said, “I’m telling you—all this is pointless—they’ll finish us before we start!” we all ignored him; with the optimism of youth—which is a more virulent form of the same disease that once infected my grandfather Aadam Aziz—we refused to look on the dark side, and not a single one of us suggested that the purpose of Midnight’s Children might be annihilation; that we would have no meaning until we were destroyed.

Salman Rushdie

Midnight's Children: A Novel

As contagiously virulent as any plague.

Frank Herbert

Heretics of Dune

He vanished through the French windows into the house, leaving Lord Galloway in an indescribable temper, at once virulent and vague.

G. K. Chesterton

The Innocence of Father Brown

The fate which awaits a presumptuous critic, even where his virulent reproaches are substantially well-founded, is plainly set forth in the treatment of Thersites; while the unpopularity of such a character is attested even more by the excessive pains which Homer takes to heap upon him repulsive personal deformities, than by the chastisement of Odysseus he is lame, bald, crook-backed, of misshapen head, and squinting vision.

Homer

The Iliad

It would, at least, deliver them from those rancorous and virulent factions which are inseparable from small democracies, and which have so frequently divided the affections of their people, and disturbed the tranquillity of their governments, in their form so nearly democratical.

Adam Smith

The Wealth of Nations