*SET-U

English word origin

Etymology of flail

From Middle English flayle, from earlier fleil, fleyl, fleȝȝl, from Old English fligel, *flegel (“flail”), from Proto-West Germanic *flagil, of uncertain origin. Cognate with Scots flail (“a thresher's flail”), West Fris

1 source sectionExtended source reportWiktionary original ↗
In this entry · 1 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.

Unnumbered source etymology

Original entry ↗
verb

To beat using a flail or similar implement. · To wave or swing vigorously · To thresh. · To move like a flail.

noun

A tool used for threshing, consisting of a long handle (handstock) with a shorter stick (swipple or swingle) attached with a short piece of chain, thong or similar material. · A weapon which has the (usually spherical) striking part attached to the handle with a flexible joint such as a chain. · Part of a rotating device, often used for cutting vegetation.

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

From Middle English flayle, from earlier fleil, fleyl, fleȝȝl, from Old English fligel, *flegel (“flail”), from Proto-West Germanic *flagil, of uncertain origin. Cognate with Scots flail (“a thresher's flail”), West Frisian fleil, flaaiel (“flail”), Dutch vlegel (“flail”), German Flegel (“flail”). Possibly a native Germanic word from Proto-Germanic *flagilaz (“whip”), from Proto-Germanic *flag-, *flah- (“to whip, beat”), from Proto-Indo-European *pleh₂k- (“to beat, hit, strike; weep”); compare Old Norse flaga (“sudden attack, bout”), Lithuanian plàkti (“to whip, lash, flog”), Ancient Greek πληγνύναι (plēgnúnai, “strike, hit, encounter”), Latin plangō (“lament”, i.e. “beat one's breast”) + Proto-Germanic *-ilaz (instrumental suffix). If so, related also to English flag, flack, flacker. Alternatively, Proto-West Germanic *flagil may be an early borrowing of Latin flagellum (“winnowing tool, thresher”), diminutive of flagrum (“scourge, whip”), from Proto-Indo-European *bʰlag-, *bʰlaǵ- (“to beat”); compare Old Norse blekkja (“to beat, mistreat”). Compare also Old French flael (“flail”), Walloon flayea (“flail”) (locally pronounced "flai"), Italian flagello (“scourge, whip, plague”).

Relationships mentioned by the source

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

  • Inherited-form mentionflayleenm
  • Inherited-form mentionfligelang
  • Inherited-form mention*flagilgmw-pro
  • Cognate mentionflailsco · a thresher's flail
  • Cognate mentionfleilfy
  • Cognate mentionvlegelnl · flail
  • Cognate mentionFlegelde · flail
  • Derivation mention*flagilazgem-pro · whip
  • Derivation mention*flag-gem-pro
  • Derivation mention*pleh₂k-ine-pro · to beat, hit, strike; weep
  • Cognate mentionflaganon · sudden attack, bout
  • Cognate mentionplàktilt · to whip, lash, flog
  • Cognate mentionπληγνύναιgrc · strike, hit, encounter
  • Cognate mentionplangōla · lament”, i.e. “beat one's breast
  • Derivation mention*-ilazgem-pro
  • Derivation mentionflagellumla · winnowing tool, thresher
  • Derivation mention*bʰlag-ine-pro
  • Cognate mentionblekkjanon · to beat, mistreat
  • Cognate mentionflaelfro · flail
  • Cognate mentionflayeawa · flail
  • Cognate mentionflagelloit
Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "flayle"
      },
      "expansion": "Middle English flayle"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "fligel"
      },
      "expansion": "Old English fligel"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*flagil"
      },
      "expansion": "Proto-West Germanic *flagil"
    },
    {
      "name": "cog",
      "args": {
        "1": "sco",
        "2": "flail",
        "t": "a thresher's flail"
      },
      "expansion": "Scots flail (“a thresher's flail”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fy",
        "2": "fleil"
      },
      "expansion": "West Frisian fleil"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "vlegel",
        "t": "flail"
      },
      "expansion": "Dutch vlegel (“flail”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Flegel",
        "t": "flail"
      },
      "expansion": "German Flegel (“flail”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*flagilaz",
        "t": "whip"
      },
      "expansion": "Proto-Germanic *flagilaz (“whip”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*flag-"
      },
      "expansion": "Proto-Germanic *flag-"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*pleh₂k-",
        "t": "to beat, hit, strike; weep"
      },
      "expansion": "Proto-Indo-European *pleh₂k- (“to beat, hit, strike; weep”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "non",
        "2": "flaga",
        "t": "sudden attack, bout"
      },
      "expansion": "Old Norse flaga (“sudden attack, bout”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "lt",
        "2": "plàkti",
        "t": "to whip, lash, flog"
      },
      "expansion": "Lithuanian plàkti (“to whip, lash, flog”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "πληγνύναι",
        "t": "strike, hit, encounter"
      },
      "expansion": "Ancient Greek πληγνύναι (plēgnúnai, “strike, hit, encounter”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "la",
        "2": "plangō",
        "t": "lament”, i.e. “beat one's breast"
      },
      "expansion": "Latin plangō (“lament”, i.e. “beat one's breast”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*-ilaz",
        "pos": "instrumental suffix"
      },
      "expansion": "Proto-Germanic *-ilaz (instrumental suffix)"
    },
    {
      "name": "m+",
      "args": {
        "1": "en",
        "2": "flag"
      },
      "expansion": "English flag"
    },
    {
      "name": "m+",
      "args": {
        "1": "gmw-pro",
        "2": "*flagil"
      },
      "expansion": "Proto-West Germanic *flagil"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "flagellum",
        "t": "winnowing tool, thresher"
      },
      "expansion": "Latin flagellum (“winnowing tool, thresher”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*bʰlag-"
      },
      "expansion": "Proto-Indo-European *bʰlag-"
    },
    {
      "name": "cog",
      "args": {
        "1": "non",
        "2": "blekkja",
        "t": "to beat, mistreat"
      },
      "expansion": "Old Norse blekkja (“to beat, mistreat”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fro",
        "2": "flael",
        "t": "flail"
      },
      "expansion": "Old French flael (“flail”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "wa",
        "2": "flayea",
        "t": "flail"
      },
      "expansion": "Walloon flayea (“flail”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "it",
        "2": "flagello",
        "3": "",
        "4": "scourge, whip, plague"
      },
      "expansion": "Italian flagello (“scourge, whip, plague”)"
    }
  ],
  "links": [
    [
      "flayle",
      "flayle#Middle_English"
    ],
    [
      "fleil",
      "fleil#Middle_English"
    ],
    [
      "fleyl",
      "fleyl#Middle_English"
    ],
    [
      "fleȝȝl",
      "fleȝȝl#Middle_English"
    ],
    [
      "fligel",
      "fligel#Old_English"
    ],
    [
      "*flegel",
      "Reconstruction:Old English/flegel"
    ],
    [
      "*flagil",
      "Reconstruction:Proto-West Germanic/flagil"
    ],
    [
      "flail",
      "flail#Scots"
    ],
    [
      "fleil",
      "fleil#West_Frisian"
    ],
    [
      "flaaiel",
      "flaaiel#West_Frisian"
    ],
    [
      "vlegel",
      "vlegel#Dutch"
    ],
    [
      "Flegel",
      "Flegel#German"
    ],
    [
      "*flagilaz",
      "Reconstruction:Proto-Germanic/flagilaz"
    ],
    [
      "*flag-",
      "Reconstruction:Proto-Germanic/flag-"
    ],
    [
      "*flah-",
      "Reconstruction:Proto-Germanic/flah-"
    ],
    [
      "*pleh₂k-",
      "Reconstruction:Proto-Indo-European/pleh₂k-"
    ],
    [
      "flaga",
      "flaga#Old_Norse"
    ],
    [
      "plàkti",
      "plakti#Lithuanian"
    ],
    [
      "πληγνύναι",
      "πληγνύναι#Ancient_Greek"
    ],
    [
      "plangō",
      "plango#Latin"
    ],
    [
      "*-ilaz",
      "Reconstruction:Proto-Germanic/-ilaz"
    ],
    [
      "flag",
      "flag#English"
    ],
    [
      "flack",
      "flack#English"
    ],
    [
      "flacker",
      "flacker#English"
    ],
    [
      "*flagil",
      "Reconstruction:Proto-West Germanic/flagil"
    ],
    [
      "flagellum",
      "flagellum#Latin"
    ],
    [
      "flagrum",
      "flagrum#Latin"
    ],
    [
      "*bʰlag-",
      "Reconstruction:Proto-Indo-European/bʰlag-"
    ],
    [
      "*bʰlaǵ-",
      "Reconstruction:Proto-Indo-European/bʰlaǵ-"
    ],
    [
      "blekkja",
      "blekkja#Old_Norse"
    ],
    [
      "flael",
      "flael#Old_French"
    ],
    [
      "flayea",
      "flayea#Walloon"
    ],
    [
      "flagello",
      "flagello#Italian"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To beat using a flail or similar implement.",
        "To wave or swing vigorously",
        "To thresh.",
        "To move like a flail."
      ],
      "tags": [
        "transitive",
        "intransitive"
      ],
      "recordId": "6408e12b29e53eec266435b9fc90720675f177f1622d8365f615181485c4b108",
      "rawRecordSha256": "f066d004b963fe4801c36b9c7b9188bd7afbc885019d20a3339973a2990788bd",
      "sourceRecordOrdinal": 305446
    },
    {
      "pos": "noun",
      "glosses": [
        "A tool used for threshing, consisting of a long handle (handstock) with a shorter stick (swipple or swingle) attached with a short piece of chain, thong or similar material.",
        "A weapon which has the (usually spherical) striking part attached to the handle with a flexible joint such as a chain.",
        "Part of a rotating device, often used for cutting vegetation."
      ],
      "tags": [
        "often",
        "plural"
      ],
      "recordId": "ffdb269e04fd98aea1e259ccc4b7c75dbeb62773767cf72db445b7b22551df49",
      "rawRecordSha256": "f224962e9cb7afc43910b43df2c14b71f192872ed9218de4d54026c7e42a93a3",
      "sourceRecordOrdinal": 305445
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "glosses": 0
  }
}

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 flail →

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
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-ZmxhaWw