A building befouled with soot.    From Wordnet, Princeton University. 

Verb (used with object) : a bird that befouls its own nest.    From Dictionary.com. 

In its befouled stupor, it incited awe and marvel.    From Wordnik.com.  [Another Roadside Attraction]

The flowing waters were befouled with the gory spray.    From Wordnik.com.  [The Danish History, Books I-IX] Reference

Long lines of frozen, grimy cocks befouled by city feet.    From Wordnik.com.  [England over Seas] Reference

In what way has your unhappy affection befouled the lady?.    From Wordnik.com.  [The Rose Rent]

The sensation was slipping away like foam on a befouled tide.    From Wordnik.com.  [The False Mirror]

While I was gone, she befouled my pc and eventually, my mind's eye.    From Wordnik.com.  [wilberteets Diary Entry] Reference

Sure your lapdog has befouled himself; let me catch hold of the nasty cur.    From Wordnik.com.  [The Adventures of Roderick Random] Reference

Hence our city streets now being befouled by drunken youth on a Saturday night.    From Wordnik.com.  [Giving evidence to the Chilcot inquiry, Tony Blair said: “I...] Reference

That's also tragic for the Chinese people who live with befouled air every day.    From Wordnik.com.  [Leo W. Gerard: China Trade Promises All Snake Oil -- Fair Trade Crucial] Reference

The water that surrounded her was constantly befouled with her poisons and wastes.    From Wordnik.com.  [Ship Of Destiny]

A butterfly befit; but where's the wit that mire-befouled to the swamp-demon yields?.    From Wordnik.com.  [Punch, or the London Charivari, Volume 100, April 4, 1891] Reference

Since you started reading this, countless barrels of oil may have befouled the gulf.    From Wordnik.com.  [You've heard of government 'by the people, for the people'?] Reference

The green light and the glossy patches of sunshine played over their befouled bodies.    From Wordnik.com.  [Lord of the Flies]

The birds were glossy black ravens, and vultures with their heads and necks befouled.    From Wordnik.com.  [The Fires of Heaven]

To a place where the scent of the sea wasn't befouled by the oily stench of the river.    From Wordnik.com.  [Thief Of Hearts]

The sleepy proprietor brought a kerosene lamp, the chimney befouled with soot and grease.    From Wordnik.com.  [The Seventh Noon] Reference

Then they washed their clothes in the lake, stepping gingerly along a shore befouled byhuman waste.    From Wordnik.com.  [A Family's Terrifying Odyssey] Reference

But then the creature huffed, snorted, backed away, shook its huge head as if it had been befouled.    From Wordnik.com.  [The Terror]

Television critics are angry that their sets and screens have been so befouled by a crummy program.    From Wordnik.com.  [Simon Maxwell Apter: Jersey Shore: The Apotheosis of Reality] Reference

Access to the house is half a mile further up through a farm gate, along a track befouled by cattle.    From Wordnik.com.  [The Complete Stories]

"Look, here is where we bathe, and also where we toilet," he says, gesturing at the befouled riverbanks.    From Wordnik.com.  [ANC Daily News Briefing] Reference

Yells, clangor, and a terrible stammer reverberated wall to wall, off the cobbles, up to soot-befouled heaven.    From Wordnik.com.  [Two in Time]

Four Finger Wu cursed his bodyguard away and pointed a stubby finger at the befouled muddy waters in the harbor.    From Wordnik.com.  [Noble House]

Tibet's clean air, water, and fragile but sustainable ecosystem, is being befouled by mass population transfers.    From Wordnik.com.  [Lhasa Spring (Tibet)] Reference

This little doggerel was certainly the latter and Geoffrey had no desire to see it befouled by excessive kindness.    From Wordnik.com.  [A Complaint to His Purse] Reference

River water becomes befouled by the discharge into it of the sewers from settlements and towns located on its banks.    From Wordnik.com.  [The Home Medical Library, Volume V (of VI)] Reference

Our very existence reminds America that, for most of her history, she befouled her ideals like rodents foul their nests.    From Wordnik.com.  [Leonce Gaiter: Hosannas Spiked With Contempt] Reference

Didst thou imagine, Babhru, thou wert the only one to be dishonoured and befouled, trodden down into the mud and thrown away?.    From Wordnik.com.  [Bubbles of the Foam] Reference

Instead, you wade into the befouled site that is election central in the aftermath of Kleefeld's wilfull blindness and write.    From Wordnik.com.  [Obama Beefing Up Florida Efforts, Padding Out Staff] Reference

How Richard II. 's courtiers must have gone slopping and spirting about in the mud that befouled their streets as well as ours!.    From Wordnik.com.  [Blackwood's Edinburgh Magazine, Volume 57, No. 357, June, 1845] Reference

Then Laurica and Natalie held their book club, discussing with which puerile, "inspirational" books they had befouled their minds.    From Wordnik.com.  [Tallulah Morehead: Survivor Samoa: Here's To the Pirates Who Lunch] Reference

New Jersey is portrayed as more Garbage State than Garden State, with toxic dumps, befouled air, and other environmental atrocities.    From Wordnik.com.  [The Toxic Avenger takes on New Jersey] Reference

As the prison flooded with storm water befouled by raw sewage the prisoners were herded into cells with mace, locked down, and abandoned.    From Wordnik.com.  [Hurricane Katrina and the Lost Prisoners of New Orleans] Reference