Sludge

6 lettersnounmoderate

Updated June 2026

Definition

Thick, muddy residue produced as a by-product of sewage treatment processes.

“The water treatment plant disposed of tonnes of sludge each month.”

Related Words

Synonyms

slimegoogoopgookguck gunk muck ooze

Word Game Tips

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Wordle

Contains uncommon consonant cluster SL and ends in DGE, a pattern shared with words like budge and fudge

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Scrabble

Worth 10 points, the DGE ending is a valid hook and the S tile opens flexible board plays

Words Related to Sludge

Words one letter different

Change a single letter of “sludge” to make these 6-letter words — useful for Wordle and crossword clues.

kludge sledge smudge

Words you can make from Sludge

Shorter words formed from the letters in “sludge”.

duels dulse gelds gleds glued glues gudes gules gusle leuds luges slued degu dels deul deus duel dues dugs elds geds geld gels gled

Add a letter to make a longer word

7-letter words you can spell by adding one letter to “sludge”.

cudgels deluges guldens kludges

Explore Similar Words

6-letter words starting with S 6-letter words ending with E All 6-letter words 5-letter words 7-letter words All word lists

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Dictionary References

Look up sludge in an authoritative dictionary for full definitions, pronunciation, and etymology.

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