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Definition of fatberg

fatberg

/ˈfæt.bɜːrɡ/
fat · berg
Plural:fatbergs
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fatberg Lexical Profile

fatberg Game Scores & Validity

• noun

1

A very large, solid mass of congealed cooking fat, grease, and non-biodegradable waste items (such as wet wipes and diapers) that accumulates in and obstructs a sewer system.

Example

"Municipal workers spent three weeks breaking up a massive fatberg that had completely blocked the main underground sewer pipe."

Synonyms
View all synonyms for fatberg

• Nearby Words

fatality
fatally
fatback
fatberg
fatcat
fate
fated

Word Origin & Etymology

Coined in the early 21st century (popularized in British English around 2013) as a blend of 'fat' and 'iceberg', referring to the massive, solid, iceberg-like accumulations of grease and waste found in urban sewer systems.

Usage Trend

Historical frequency of usage in published text.

180019102020
Data source: Google Books Ngram Viewer

Cite this Entry

Wordmom. (2026). Definition of Fatberg. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/fatberg
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