noun
a thick, muddy substance or sediment found at the bottom of a liquid
verb
None
adjective
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adverb
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pronoun
None
preposition
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conjunction
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interjection
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article
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The wastewater treatment plant is responsible for removing sludge from the sewage before releasing it back into the environment.
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I accidentally stepped in some sludge while walking through the construction site.
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I can't believe you're still using that old sludge of a computer.
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The negative comments on social media were like emotional sludge weighing me down.