Standard Lemma guide

sludge

noun · verb · 11 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /slʌd͡ʒ/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • US: Recorded audio is listed in the source snapshot.
  • rhymes with -ʌdʒ
  • CMU ARPABET: S L AH1 JH Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

noun

Meaning 1

Solids separated from suspension in a liquid.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A residual semi-solid material left from industrial, water treatment, or wastewater treatment processes.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

A sediment of accumulated minerals in a steam boiler.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

A mass of small pieces of ice on the surface of a water body.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

noun

Meaning 5

Ellipsis of sludge metal.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, ellipsis, uncountable

Topics: entertainment, lifestyle, music

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

noun

Meaning 6

Institutional policies that introduce tedium and inefficiency in processes.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Qualifier: behavioral science

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

noun

Meaning 7

An acronym used to help remember the common symptoms of certain affections of a cholinergic toxidrome: salivation, lacrimation, urination, defecation, gastrointestinal upset, emesis.

Definition source: English Wiktionary via Wiktextract

Usage: mnemonic

Topics: emergency-medicine, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

verb

Meaning 8

To slump or slouch.

Definition source: English Wiktionary via Wiktextract

Usage: informal, intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

verb

Meaning 9

To slop or drip slowly.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

10

noun

Meaning 10

the precipitate produced by sewage treatment

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: precipitate

11

noun

Meaning 11

any thick, viscous matter

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: slime, goo, goop, gook, guck, gunk, muck, ooze

Antonyms: none provided

Broader terms: matter

Narrower terms: sapropel

History

Etymology

From Middle English slugge, sluche (“mud, mire”), probably an alteration of Middle English sliche, slicche ("mud, slush, tar"; whence Modern English slitch), from Old English *sliċ, from Proto-West Germanic *sliki, *slīk, from Proto-Germanic *slikiz, *slīką (“mud, slush”). Cognate with Dutch slijk, German Schlick. Compare also slush.

Across languages

Translations

48 source translations are retained for this English entry.

  • Chinese Mandarin: 污泥 (wūní) — generic term for separated solids
  • Esperanto: ŝlimo — generic term for separated solids
  • Finnish: liete — generic term for separated solids
  • Finnish: lieju — generic term for separated solids
  • Finnish: muta — generic term for separated solids
  • French: lie — generic term for separated solids
  • German: Schlamm — generic term for separated solids
  • German: Matsch — generic term for separated solids
  • Irish: dríodar — generic term for separated solids
  • Japanese: 泥 (doro) — generic term for separated solids
  • Japanese: 泥土 (deido) — generic term for separated solids
  • Korean: 진흙 (jinheuk) — generic term for separated solids
  • Korean: 진창 (jinchang) — generic term for separated solids
  • Māori: kene — generic term for separated solids
  • Plautdietsch: Moarauss — generic term for separated solids
  • Portuguese: sedimento — generic term for separated solids
  • Russian: шлам (šlam) — generic term for separated solids
  • Russian: ил (il) — generic term for separated solids
  • Spanish: lodo — generic term for separated solids
  • Spanish: sedimento — generic term for separated solids
  • Spanish: puaj — generic term for separated solids
  • Spanish: fango — generic term for separated solids
  • Spanish: pecina — generic term for separated solids
  • Ukrainian: мул (mul) — generic term for separated solids
  • Arabic: حَمَأ (ḥamaʔ) — residual material from a process
  • Arabic: حَمأَة — residual material from a process
  • Bulgarian: шлам (šlam) — residual material from a process
  • Finnish: liete — residual material from a process
  • German: Abwasserschlamm — residual material from a process
  • Irish: dríodar — residual material from a process
  • Māori: kene — residual material from a process
  • Polish: szlam — residual material from a process
  • Polish: muł — residual material from a process
  • Russian: оса́док (osádok) — residual material from a process
  • Spanish: fango — residual material from a process
  • Turkish: atık — residual material from a process
  • Turkish: çamur — residual material from a process
  • Turkish: tortu — residual material from a process
  • Arabic: رُسَابَة (rusāba) — sediment of minerals in a steam boiler
  • Bulgarian: накип (nakip) — sediment of minerals in a steam boiler
  • Finnish: kattilakivi — sediment of minerals in a steam boiler
  • Russian: шлам (šlam) — sediment of minerals in a steam boiler
  • Spanish: lodo — sediment of minerals in a steam boiler
  • Bulgarian: плаващ лед (plavašt led) — small pieces of ice
  • Finnish: suppo — small pieces of ice
  • Finnish: hyhmä — small pieces of ice
  • Finnish: sohjo — small pieces of ice
  • Spanish: costra — small pieces of ice