*SET-U

English word origin

Etymology of cop

Uncertain. Perhaps from Middle English *coppen, *copen, from Old English copian (“to plunder; pillage; steal”); or possibly from Middle French caper (“to capture”), from Latin capiō (“to seize, grasp”); or possibly from

4 source sectionsExtended source reportWiktionary original ↗
In this entry · 4 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 ↗
verb

To capture or arrest someone. · To obtain, to purchase (items including but not limited to drugs), to get hold of, to take. · To (be forced to) take; to receive; to shoulder; to bear, especially blame or punishment for a particular instance of wrongdoing. · To see and record a railway locomotive for the first time.

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

Uncertain. Perhaps from Middle English *coppen, *copen, from Old English copian (“to plunder; pillage; steal”); or possibly from Middle French caper (“to capture”), from Latin capiō (“to seize, grasp”); or possibly from Dutch kapen (“to seize, hijack”), from Old Frisian kāpia (“to buy”), whence West Frisian keapje, Saterland Frisian koopje, North Frisian koopi, kuupe. Compare also Middle English copen (“to buy”), from Middle Dutch copen.

Relationships mentioned by the source

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

  • Root classification mention*kap-ine-pro
  • Inherited-form mention*coppenenm
  • Inherited-form mentioncopianang · to plunder; pillage; steal
  • Derivation mentioncaperfrm · to capture
  • Derivation mentioncapiōla · to seize, grasp
  • Derivation mentionkapennl · to seize, hijack
  • Derivation mentionkāpiaofs · to buy
  • Cognate mentionkeapjefy
  • Cognate mentionkoopjestq
  • Cognate mentionkoopifrr
  • Cognate mentioncopenenm · to buy
  • Cognate mentioncopendum

This page abbreviates 5 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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      "name": "root",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*kap-",
        "id": "seize"
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      "expansion": ""
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    {
      "name": "unc",
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        "3": "*coppen"
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      "expansion": "Middle English *coppen"
    },
    {
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        "3": "copian",
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    },
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      "name": "der",
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        "t": "to capture"
      },
      "expansion": "Middle French caper (“to capture”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "capiō",
        "t": "to seize, grasp"
      },
      "expansion": "Latin capiō (“to seize, grasp”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "nl",
        "3": "kapen",
        "t": "to seize, hijack"
      },
      "expansion": "Dutch kapen (“to seize, hijack”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ofs",
        "3": "kāpia",
        "t": "to buy"
      },
      "expansion": "Old Frisian kāpia (“to buy”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fy",
        "2": "keapje"
      },
      "expansion": "West Frisian keapje"
    },
    {
      "name": "cog",
      "args": {
        "1": "stq",
        "2": "koopje"
      },
      "expansion": "Saterland Frisian koopje"
    },
    {
      "name": "cog",
      "args": {
        "1": "frr",
        "2": "koopi"
      },
      "expansion": "North Frisian koopi"
    },
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      "name": "cog",
      "args": {
        "1": "enm",
        "2": "copen",
        "t": "to buy"
      },
      "expansion": "Middle English copen (“to buy”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "dum",
        "2": "copen"
      },
      "expansion": "Middle Dutch copen"
    }
  ],
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      "Reconstruction:Middle English/coppen"
    ],
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      "*copen",
      "Reconstruction:Middle English/copen"
    ],
    [
      "copian",
      "copian#Old_English"
    ],
    [
      "caper",
      "caper#Middle_French"
    ],
    [
      "capiō",
      "capio#Latin"
    ],
    [
      "kapen",
      "kapen#Dutch"
    ],
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      "kāpia",
      "kapia#Old_Frisian"
    ],
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      "keapje",
      "keapje#West_Frisian"
    ],
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      "koopje",
      "koopje#Saterland_Frisian"
    ],
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      "koopi",
      "koopi#North_Frisian"
    ],
    [
      "kuupe",
      "kuupe#North_Frisian"
    ],
    [
      "copen",
      "copen#Middle_English"
    ],
    [
      "copen",
      "copen#Middle_Dutch"
    ]
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        "To capture or arrest someone.",
        "To obtain, to purchase (items including but not limited to drugs), to get hold of, to take.",
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Source etymology 2

Original entry ↗
noun

A police officer or prison guard.

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

Short for copper (“police officer”), itself from the verb cop (“to lay hold of”) above, in reference to arresting criminals. An erroneous folk etymology derives it from the acronym “Constable On Patrol” (C.O.P.).

Inspect preserved source fields

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

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      "constable"
    ]
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Source etymology 3

Original entry ↗
noun

A spider.

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

From Middle English coppe, from Old English *coppe, as in ātorcoppe (“spider”, literally “venom head”), from Old English copp (“top, summit, head”), from Proto-West Germanic *kopp, from Proto-Germanic *kuppaz (“vault, round vessel, head”), from Proto-Indo-European *gew- (“to bend, curve”). Cognate with Middle Dutch koppe, kobbe (“spider”). More at cobweb.

Relationships mentioned by the source

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

  • Inherited-form mentioncoppeenm
  • Inherited-form mention*coppeang
  • Derivation mentioncoppang
  • Inherited-form mention*koppgmw-pro
  • Derivation mention*kuppazgem-pro
  • Inherited-form mention*gew-ine-pro
  • Cognate mentionkoppedum
Inspect preserved source fields

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

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    },
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    },
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  ],
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      "coppe#Middle_English"
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      "atorcoppe#Old_English"
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Source etymology 4

Original entry ↗
noun

A quill or tube upon which silk is wound. · A merlon. · A roughly dome-shaped piece of armor, especially one covering the shoulder, the elbow, or the knee. · A conical ball of thread wound on to the spindle in a spinning machine.

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

From Middle English cop, coppe, from Old English cop, copp, from Proto-West Germanic *kopp, from Proto-Germanic *kuppaz (“vault, basin, round object”), from Proto-Indo-European *gew-. Cognate with Dutch kop, German Kopf.

Relationships mentioned by the source

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

  • Inherited-form mentioncopenm
  • Inherited-form mentioncopang
  • Inherited-form mention*koppgmw-pro
  • Inherited-form mention*kuppazgem-pro · vault, basin, round object
  • Inherited-form mention*gew-ine-pro
  • Cognate mentionkopnl
  • Cognate mentionKopfde

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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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 cop →

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-Y29w