sludge

Thick wastewater residue

Sludge is thick, soft, wet matter—mud, sediment, or industrial waste with a similar consistency.

Sewage treatment produces sludge.

Oil sludge accumulates in engines.

The word suggests something unpleasant and difficult to deal with: wading through bureaucratic sludge.

As a music genre, sludge (or sludge metal) combines doom metal's slow heaviness with hardcore punk's aggression.

texture

viscous

Thick and slow-flowing

  • gooeySoft and sticky
  • thickHaving great depth
  • oozySeeping moisture slowly

gelatinous · slick · gloppy · slimy · sticky · dense · pasty · clotted · congealed · syrupy

waste

sewage

Liquid refuse in drains

biosolids · septic · cesspool · excrement · offal · manure · cesspit · night soil · bilge · scum

muddy

mire

Boggy, waterlogged terrain

  • muckFilthy wet dirt
  • bogAcidic peat wetland
  • oozeSeep gradually out

quagmire · morass · swamp · marsh · slop · waterlogged · soggy · marshland · mudflat · wetland

sediment

silt

Waterborne earth particles

precipitate · settling · alluvium · ooze · particles · silting · clay · muck · bottoms · settlings

industrial

wastewater

Contaminated drainage from buildings

sewage · refinery · chemicals · filtration · toxic · contaminants · heavy metals · processing · dewatering · digester

fertilizer

biosolids

Treated sewage for reuse

nitrogen · phosphate · soil amendment · spreading · agricultural · mulch · organic matter

pollution

contamination

Introduction of impurities

runoff · dioxins · heavy metals · carcinogens · groundwater · landfill · biohazard · oil spill · petrochemicals · acid

Categories
Opposites
purity/clarity

sludgeclear water

Uncontaminated, transparent liquid

pure water · clean water · purified water · distilled water · spring water

consistency/viscosity

sludgewater

Clear essential liquid

gas · vapor · liquid · runny · fluid

desirability/value

sludgenectar

Floral sugar water

elixir · ambrosia · essence · champagne · treasure

Phrases
Family

sludgy, sludges, sludged, sludging

Familiarity
Top 100,000
Profile
Known to kids · Used worldwide · Timeless · Concrete · Negative · Everyday, not technical · Rated G