# sleech

> English word · Noun

## Definitions
1. Thick, soft mud that was left behind by flowing water, usually alongside riverbeds or shorelines.
2. A soft, unstable mixture of mud and clay beneath Belfast, which is known for being difficult to build on.

## Etymology
From Middle English sliche, a variant of slicche, from Old English *sliċ (“mud, sludge”), from Proto-West Germanic *sliki, from Proto-Germanic *slikiz (“mud, slush”), from Proto-Indo-European *sleyg- (“to slide, be slippery”). Doublet of slitch and sludge.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/sleech