*SET-U

English word origin

Etymology of spy

From Middle English spien, aphetic variant of earlier espien (“to espy”), from Old French espier (“to spy”), from Frankish *spehōn (“to spy”), from Proto-Germanic *spehōną (“to see, look”), from Proto-Indo-European *speḱ

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 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 · variant 1/2

Original entry ↗
verb

To act as a spy. · To spot; to catch sight of; to espy. · To search narrowly; to scrutinize. · To explore; to see; to view; inspect and examine secretly, as a country.

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

From Middle English spien, aphetic variant of earlier espien (“to espy”), from Old French espier (“to spy”), from Frankish *spehōn (“to spy”), from Proto-Germanic *spehōną (“to see, look”), from Proto-Indo-European *speḱ- (“to look”). Akin to German spähen (“to spy”), Dutch spieden (“to spy”). The noun displaced native Old English sċēawere (literally “watcher”), which was also the word for "mirror." In this sense, the verb displaced Old English sċēawian, which was also the word for "to watch" and became the Modern English word show. Distant cognate vie PIE with Latin speculātor, Ancient Greek κατάσκοπος (katáskopos). Compare typologically Russian согляда́тай (sogljadátaj) (akin to гляде́ть (gljadétʹ)).

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.

{
  "templates": [
    {
      "name": "root",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*speḱ-"
      },
      "expansion": ""
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "spien"
      },
      "expansion": "Middle English spien"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "fro",
        "3": "espier",
        "4": "",
        "5": "to spy"
      },
      "expansion": "Old French espier (“to spy”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "frk",
        "3": "*spehōn",
        "4": "",
        "5": "to spy"
      },
      "expansion": "Frankish *spehōn (“to spy”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*spehōną",
        "4": "",
        "5": "to see, look"
      },
      "expansion": "Proto-Germanic *spehōną (“to see, look”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*speḱ-",
        "4": "",
        "5": "to look"
      },
      "expansion": "Proto-Indo-European *speḱ- (“to look”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "spähen",
        "3": "",
        "4": "to spy"
      },
      "expansion": "German spähen (“to spy”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "spieden",
        "3": "",
        "4": "to spy"
      },
      "expansion": "Dutch spieden (“to spy”)"
    },
    {
      "name": "ncog",
      "args": {
        "1": "ang",
        "2": "sċēawere",
        "lit": "watcher"
      },
      "expansion": "Old English sċēawere (literally “watcher”)"
    },
    {
      "name": "ncog",
      "args": {
        "1": "ang",
        "2": "sċēawian"
      },
      "expansion": "Old English sċēawian"
    },
    {
      "name": "cog",
      "args": {
        "1": "la",
        "2": "speculātor"
      },
      "expansion": "Latin speculātor"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "κατάσκοπος"
      },
      "expansion": "Ancient Greek κατάσκοπος (katáskopos)"
    },
    {
      "name": "m+",
      "args": {
        "1": "ru",
        "2": "согляда́тай"
      },
      "expansion": "Russian согляда́тай (sogljadátaj)"
    }
  ],
  "links": [
    [
      "spien",
      "spien#Middle_English"
    ],
    [
      "espien",
      "espien#Middle_English"
    ],
    [
      "espier",
      "espier#Old_French"
    ],
    [
      "*spehōn",
      "Reconstruction:Proto-West Germanic/spehōn"
    ],
    [
      "*spehōną",
      "Reconstruction:Proto-Germanic/spehōną"
    ],
    [
      "*speḱ-",
      "Reconstruction:Proto-Indo-European/speḱ-"
    ],
    [
      "spähen",
      "spähen#German"
    ],
    [
      "spieden",
      "spieden#Dutch"
    ],
    [
      "sċēawere",
      "sceawere#Old_English"
    ],
    [
      "sċēawian",
      "sceawian#Old_English"
    ],
    [
      "show",
      "show#English"
    ],
    [
      "speculātor",
      "speculator#Latin"
    ],
    [
      "κατάσκοπος",
      "κατάσκοπος#Ancient_Greek"
    ],
    [
      "согляда́тай",
      "соглядатай#Russian"
    ],
    [
      "гляде́ть",
      "глядеть#Russian"
    ]
  ],
  "references": [],
  "descendants": [
    {
      "lang": "Japanese",
      "lang_code": "ja",
      "word": "スパイ",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "supai"
    },
    {
      "lang": "Korean",
      "lang_code": "ko",
      "word": "스파이",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "seupai"
    }
  ],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To act as a spy.",
        "To spot; to catch sight of; to espy.",
        "To search narrowly; to scrutinize.",
        "To explore; to see; to view; inspect and examine secretly, as a country."
      ],
      "tags": [
        "intransitive",
        "transitive"
      ],
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      "sourceRecordOrdinal": 222326
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
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  }
}

Unnumbered source etymology · variant 2/2

Original entry ↗
noun

A person who secretly watches and examines the actions of other individuals or organizations and gathers information on them (usually to gain an advantage). · A defensive player assigned to cover an offensive backfield player man-to-man when they are expected to engage in a running play, but the offensive player does not run with the ball immediately.

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

From Middle English spien, aphetic variant of earlier espien (“to espy”), from Old French espier (“to spy”), from Frankish *spehōn (“to spy”), from Proto-Germanic *spehōną (“to see, look”), from Proto-Indo-European *speḱ- (“to look”). Akin to German spähen (“to spy”), Dutch spieden (“to spy”). The noun displaced native Old English sċēawere (literally “watcher”), which was also the word for "mirror." In this sense, the verb displaced Old English sċēawian, which was also the word for "to watch" and became the Modern English word show. Distant cognate vie PIE with Latin speculātor, Ancient Greek κατάσκοπος (katáskopos). Compare typologically Russian согляда́тай (sogljadátaj) (akin to гляде́ть (gljadétʹ)).

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.

{
  "templates": [
    {
      "name": "root",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*speḱ-"
      },
      "expansion": ""
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "spien"
      },
      "expansion": "Middle English spien"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "fro",
        "3": "espier",
        "4": "",
        "5": "to spy"
      },
      "expansion": "Old French espier (“to spy”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "frk",
        "3": "*spehōn",
        "4": "",
        "5": "to spy"
      },
      "expansion": "Frankish *spehōn (“to spy”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*spehōną",
        "4": "",
        "5": "to see, look"
      },
      "expansion": "Proto-Germanic *spehōną (“to see, look”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*speḱ-",
        "4": "",
        "5": "to look"
      },
      "expansion": "Proto-Indo-European *speḱ- (“to look”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "spähen",
        "3": "",
        "4": "to spy"
      },
      "expansion": "German spähen (“to spy”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "spieden",
        "3": "",
        "4": "to spy"
      },
      "expansion": "Dutch spieden (“to spy”)"
    },
    {
      "name": "ncog",
      "args": {
        "1": "ang",
        "2": "sċēawere",
        "lit": "watcher"
      },
      "expansion": "Old English sċēawere (literally “watcher”)"
    },
    {
      "name": "ncog",
      "args": {
        "1": "ang",
        "2": "sċēawian"
      },
      "expansion": "Old English sċēawian"
    },
    {
      "name": "cog",
      "args": {
        "1": "la",
        "2": "speculātor"
      },
      "expansion": "Latin speculātor"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "κατάσκοπος"
      },
      "expansion": "Ancient Greek κατάσκοπος (katáskopos)"
    },
    {
      "name": "m+",
      "args": {
        "1": "ru",
        "2": "согляда́тай"
      },
      "expansion": "Russian согляда́тай (sogljadátaj)"
    }
  ],
  "links": [
    [
      "spien",
      "spien#Middle_English"
    ],
    [
      "espien",
      "espien#Middle_English"
    ],
    [
      "espier",
      "espier#Old_French"
    ],
    [
      "*spehōn",
      "Reconstruction:Proto-West Germanic/spehōn"
    ],
    [
      "*spehōną",
      "Reconstruction:Proto-Germanic/spehōną"
    ],
    [
      "*speḱ-",
      "Reconstruction:Proto-Indo-European/speḱ-"
    ],
    [
      "spähen",
      "spähen#German"
    ],
    [
      "spieden",
      "spieden#Dutch"
    ],
    [
      "sċēawere",
      "sceawere#Old_English"
    ],
    [
      "sċēawian",
      "sceawian#Old_English"
    ],
    [
      "show",
      "show#English"
    ],
    [
      "speculātor",
      "speculator#Latin"
    ],
    [
      "κατάσκοπος",
      "κατάσκοπος#Ancient_Greek"
    ],
    [
      "согляда́тай",
      "соглядатай#Russian"
    ],
    [
      "гляде́ть",
      "глядеть#Russian"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "A person who secretly watches and examines the actions of other individuals or organizations and gathers information on them (usually to gain an advantage).",
        "A defensive player assigned to cover an offensive backfield player man-to-man when they are expected to engage in a running play, but the offensive player does not run with the ball immediately."
      ],
      "tags": [],
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      "sourceRecordOrdinal": 222325
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  "omittedAuxiliaryFields": {
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    "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 spy →

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-c3B5