"You canker blossom!" 3 Shakespearean Insults


[sluhj] /slʌdʒ/
mud, mire, or ooze; slush.
a deposit of ooze at the bottom of a body of water.
any of various more or less mudlike deposits or mixtures.
the sediment in a steam boiler or water tank.
broken ice, as on the sea.
a mixture of some finely powdered substance and water.
sediment deposited during the treatment of sewage.
Also called activated sludge. Bacteriology. sewage sediment that contains a heavy growth of microorganisms, resulting from vigorous aeration.
a fine, mudlike powder produced by a mining drill.
Origin of sludge
1640-50; variant of dial. slutch, slitch, Middle English slich slime, wet mud (compare its derivative slucched muddy); apparently of expressive orig.
Related forms
de-sludge, verb (used with object), de-sludged, de-sludging. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for sludge
  • Now the rains turn the roofs to sludge, which causes buildings to collapse.
  • Tiny bits of food get caught up in that calcified bacterial sludge, where they can remain for millennia without disintegrating.
  • From there, they can wash down drains, ultimately ending up in the sewage sludge of wastewater treatment plants.
  • The remaining sludge is processed to recover cobalt, which is used to make battery electrodes.
  • They are developing a technique that employs ultrasound, rather than pumps, to break up the sludge.
  • Finally, some organic fertilizers contain sewage sludge, leftover from wastewater treatment plants.
  • He urged the urgent installation of a new pumping station and upgrades of the high-density sludge treatment works.
  • It is a thick brown sludge, gritty and triggering an immediate gag reflex.
  • He climbed down into several more manholes to scoop up clots of sludge.
  • Even in a beaker, bacteria in ocean bottom sludge survive by sharing.
British Dictionary definitions for sludge


soft mud, snow, etc
any deposit or sediment
a surface layer of ice that has a slushy appearance
(in sewage disposal) the solid constituents of sewage that precipitate during treatment and are removed for subsequent purification
Word Origin
C17: probably related to slush
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for sludge

"mud, mire, ooze," 1640s, of uncertain origin, possibly a variant of Middle English slutch "mud, mire," or a variant of slush (n.).

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source

Word of the Day

Difficulty index for sludge

Many English speakers likely know this word

Word Value for sludge

Scrabble Words With Friends

Quotes with sludge

Nearby words for sludge