scum

But not long after the job was complete, the paint began to visibly peel, and the gleaming waters promptly refilled with green pond scum.

From Barron's ● Jun. 21, 2026

“I went through four years of hell by this scum that we had to deal with,” Trump said.

From Salon ● Feb. 6, 2025

The first is a “caution” advisory, which indicates visitors can swim but should stay away from algae and scum in the water.

From Los Angeles Times ● Aug. 22, 2024

On Tuesday, Daera advised people against bathing at Rea's Wood in Lough Neagh due to "the presence of a thick algal scum".

From BBC ● Jul. 17, 2024

When he breathes through his open mouth, I can smell the night scum coating his tongue and the sunny-side-up eggs he ate for breakfast.

From "Wintergirls" by Laurie Halse Anderson

When this occurs, blue-green algae can form blooms that discolour the water, or produce floating mats or scums on the water's surface.

From BBC ● Sep. 9, 2025

When this occurs, the algae can form blooms that discolour the water or produce floating mats or scums on the water’s surface.

From BBC ● Sep. 13, 2024

“You’re in the business of representing scums and trying to make as much money as long as there’s this lapse in the law.”

From Time ● Aug. 6, 2014

They are confined to fresh water, and seldom occur in masses of sufficient size to be seen with the naked eye, usually being found associated with pond scums or other filamentous forms.

From Elements of Structural and Systematic Botany For High Schools and Elementary College Courses by Campbell, Douglas Houghton

There are various genera of the pond scums, differing in the form of the chloroplasts and also in the position of the spores.

From Elements of Structural and Systematic Botany For High Schools and Elementary College Courses by Campbell, Douglas Houghton

A thick mist scummed the windshields as the 39-car motorcade rolled eastward under the grey sky toward Andau, a scant kilometer from the border.

From Time Magazine Archive

It is here laboured or beaten with great staves, like batter or white starch, when it is allowed to settle, and the clear water on the top is scummed off.

From A General History and Collection of Voyages and Travels — Volume 08 by Kerr, Robert

At the bridge the shingle bank baulks the stream from a clear course into the sea and usually forces it into an ignominious and green scummed pool that slowly filters through the stony wall.

From Wanderings in Wessex An Exploration of the Southern Realm from Itchen to Otter by Holmes, Edric

Boil them together a little while, till it be well scummed, and enough to become gelly.

From The Closet of Sir Kenelm Digby Knight Opened by MacDonell, Anne

Then boil it gently, skimming it all the while, till all the scum be perfectly scummed off; and after that boil it a little longer, peradventure a quarter of an hour.

From The Closet of Sir Kenelm Digby Knight Opened by MacDonell, Anne

The mission stories often guide you through a level’s most unique assassinations, which is a nice gift to players who don’t like engaging in the aggressive, save scumming and trial-and-error obsessiveness those never-be-seen challenges require.

From The Verge ● Jan. 27, 2021

To every pint of juice, add two pounds of powdered loaf-sugar, boiling and scumming it in the same manner as for any other jam or jelly.

From The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches, Adapted to the Use of Private Families by Eaton, Mary, fl. 1823-1849

Boil all these together, till the scum be boiled in, not scumming it.

From The Closet of Sir Kenelm Digby Knight Opened by MacDonell, Anne

The next day boil it gently, scumming it all the while till no more scum riseth; and if you will clarifie the Liquor with a few beaten whites of Eggs, it will be the clearer.

From The Closet of Sir Kenelm Digby Knight Opened by MacDonell, Anne

"There is a brain that will endure but one scumming."

From The Works of Charles and Mary Lamb — Volume 6 Letters 1821-1842 by Lamb, Mary