greywater

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A form of gray water — Water that is not clean enough to be potable, such as having been used for washing, but not contaminated with fecal matter or other source of dangerous bacteria or dangerous or noxious materials.

UncommonScrabble 16
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Meanings

noungreywater (countable and uncountable, plural greywaters)

plural greywaters

  1. alternativecountableuncountableAlternative spelling of gray water.

Origin

From grey + water.

Full word history & related roots →
Cite this entry
APA

greywater. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/greywater

MLA

“greywater.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/greywater. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “greywater,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/greywater.

Source: greywater on Wiktionary, CC BY-SA 4.0.