*SET-U

English word origin

Etymology of loo

Uncertain, although usually derived in some way from Waterloo, the site of Wellington's 1815 victory over Napoleon, likely via a pun based on water closet. Other suggested derivations include corruptions of French l'eau

6 source sectionsExtended source reportWiktionary original ↗
In this entry · 6 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Source etymology 1

Original entry ↗
noun

A lavatory: a room used for urination and defecation. · A toilet: a fixture used for urination and defecation.

Selected source glosses provide context, not a complete modern definition inventory

Uncertain, although usually derived in some way from Waterloo, the site of Wellington's 1815 victory over Napoleon, likely via a pun based on water closet. Other suggested derivations include corruptions of French l'eau (“water”), lieu (“place”), lieux d'aisances (“'places of convenience': a lavatory”), lieu à l'anglaise (“'English place': a British-style lavatory”), bordalou (“a diminutive chamber pot”) or gardez l'eau (“'mind the water'”), via Scots gardyloo, formerly used in Edinburgh while emptying chamber pots out of windows; the supposed use of "Room 100" as the lavatory in Continental hotels; a popularisation of lew, a regional corruption of lee (“downwind”), in reference to shepherds' privies or the former use of beakheads on that side of the ship for urination and defecation; or a clipped form of the name of the unpopular 19th-century Countess of Lichfield Lady Harriett Georgiana Louisa Hamilton Anson, who was the subject of an 1867 prank whereby her bedroom's name-card was placed on the door to the lavatory, prompting the other guests to begin speaking of "going to Lady Louisa".

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

  • Derivation mentionl'fr
  • Derivation mentiongardyloosco
Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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        "1": "toilet (fixture)"
      },
      "expansion": ""
    },
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    },
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      "eau#French"
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      "water",
      "water"
    ],
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      "lieu",
      "lieu#French"
    ],
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      "place",
      "place"
    ],
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      "lieux d'aisances#French"
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      "place"
    ],
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    ],
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      "place"
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      "British",
      "British"
    ],
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    ],
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      "lavatory",
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    ],
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      "bordalou",
      "bordalou#French"
    ],
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      "diminutive",
      "diminutive"
    ],
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      "chamber pot",
      "chamber pot"
    ],
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      "gardez",
      "gardez#French"
    ],
    [
      "l'",
      "l'#French"
    ],
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      "eau",
      "eau#French"
    ],
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      "mind",
      "mind"
    ],
    [
      "water",
      "water"
    ],
    [
      "gardyloo",
      "gardyloo#Scots"
    ],
    [
      "Edinburgh",
      "Edinburgh"
    ],
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      "chamber pot",
      "chamber pot"
    ],
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      "Continental",
      "Continental"
    ],
    [
      "lew",
      "lew#English"
    ],
    [
      "lee",
      "lee#English"
    ],
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      "downwind",
      "downwind"
    ],
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      "beakhead",
      "beakhead"
    ]
  ],
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Source etymology 2

Original entry ↗
verb

To urge on with cries of loo or (figuratively) by other shouting or outcry.

intj

A cry to urge on hunting dogs.

Selected source glosses provide context, not a complete modern definition inventory

Clipped form of halloo.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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Source etymology 3

Original entry ↗
verb

To beat in the card game lanterloo. · To pay a penalty to the pool for breaking certain rules or failing to take a trick in lanterloo. · To pay any penalty to any community.

noun

Alternative form of lanterloo: the card game. · The penalty paid to the pool in lanterloo for breaking certain rules or failing to take a trick. · An act that prompts such a penalty. · A game of lanterloo.

Selected source glosses provide context, not a complete modern definition inventory

Clipped form of lanterloo.

This page abbreviates 1 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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Source etymology 4

Original entry ↗
noun

A half-mask, particularly (historical) those velvet half-masks fashionable in the 17th century as a means of protecting women's complexion from the sun.

Selected source glosses provide context, not a complete modern definition inventory

From French loup (“wolf; mask, eyemask”). Doublet of lobo, lupus, and wolf.

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

  • Derivation mentionloupfr
  • Doublet mentionloboen
  • Doublet mentionlupusen
  • Doublet mentionwolfen
Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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Source etymology 5

Original entry ↗
noun

A hot dust-bearing wind found in Bihar, Uttar Pradesh and the Punjab.

Selected source glosses provide context, not a complete modern definition inventory

From Hindi लू (lū), ultmately from Sanskrit उल्का (ulkā, “flame”).

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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Source etymology 6

Original entry ↗
noun

A lieutenant.

Selected source glosses provide context, not a complete modern definition inventory

Clipped form of lieutenant.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

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Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for loo →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
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Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-bG9v