*SET-U

English word origin

Etymology of back

Etymology tree Proto-Indo-European *bʰeg-der.? Proto-Germanic *baką Proto-West Germanic *bak Old English bæc Middle English bak English back From Middle English bak, from Old English bæc, from Proto-West Germanic *bak, f

3 source sectionsExtended source reportWiktionary original ↗
In this entry · 3 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 · variant 1/2

Original entry ↗
adv

To or in a previous condition or place. · In a direction opposite to that in which someone or something is facing or normally pointing. · In a direction opposite to the usual or desired direction of movement or progress, physically or figuratively. · Towards, into or in the past.

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

Etymology tree Proto-Indo-European *bʰeg-der.? Proto-Germanic *baką Proto-West Germanic *bak Old English bæc Middle English bak English back From Middle English bak, from Old English bæc, from Proto-West Germanic *bak, from Proto-Germanic *baką, possibly from Proto-Indo-European *bʰeg- (“to bend”). The adverb represents an aphetic form of aback. Compare Middle Low German bak (“back”), from Old Saxon bak, and West Frisian bekling (“chair back”), Old High German bah, Swedish and Norwegian bak. Cognate with German Bache (“sow [adult female hog]”).

Relationships mentioned by the source

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

  • Inherited-form mentionbakenm
  • Inherited-form mentionbæcang
  • Inherited-form mention*bakgmw-pro
  • Inherited-form mention*bakągem-pro
  • Inherited-form mention*bʰeg-ine-pro · to bend
  • Cognate mentionbakgml · back
  • Cognate mentionbeklingfy · chair back
  • Cognate mentionbahgoh
  • Cognate mentionbakno
  • Cognate mentionBachede

This page abbreviates 7 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.

{
  "templates": [
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:bak<id:hind>",
        "id": "rear",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *bʰeg-der.?\nProto-Germanic *baką\nProto-West Germanic *bak\nOld English bæc\nMiddle English bak\nEnglish back\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"id\" : \"bend\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*bʰeg-\", \"lang\" : \"ine-pro\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*baką\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*bak\", \"status\" : \"ok\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Old English\", \"term\" : \"bæc\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Middle English\", \"term\" : \"bak\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"back\", \"lang\" : \"en\" }\" data-id=\"rear\" data-lang=\"en\" data-title=\"back\" id=\"English:_rear\">"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "bak"
      },
      "expansion": "Middle English bak"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "bæc"
      },
      "expansion": "Old English bæc"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*bak"
      },
      "expansion": "Proto-West Germanic *bak"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*baką"
      },
      "expansion": "Proto-Germanic *baką"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*bʰeg-",
        "t": "to bend"
      },
      "expansion": "Proto-Indo-European *bʰeg- (“to bend”)"
    },
    {
      "name": "cognate",
      "args": {
        "1": "gml",
        "2": "bak",
        "t": "back"
      },
      "expansion": "Middle Low German bak (“back”)"
    },
    {
      "name": "cognate",
      "args": {
        "1": "fy",
        "2": "bekling",
        "t": "chair back"
      },
      "expansion": "West Frisian bekling (“chair back”)"
    },
    {
      "name": "cognate",
      "args": {
        "1": "goh",
        "2": "bah"
      },
      "expansion": "Old High German bah"
    },
    {
      "name": "cognate",
      "args": {
        "1": "sv",
        "2": "-"
      },
      "expansion": "Swedish"
    },
    {
      "name": "cognate",
      "args": {
        "1": "no",
        "2": "bak"
      },
      "expansion": "Norwegian bak"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Bache",
        "3": "",
        "4": "sow [adult female hog]"
      },
      "expansion": "German Bache (“sow [adult female hog]”)"
    },
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        "1": "en",
        "2": ":inh",
        "3": "enm:bak<id:hind>",
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      },
      "expansion": "Etymology tree\nProto-Indo-European *bʰeg-der.?\nProto-Germanic *baką\nProto-West Germanic *bak\nOld English bæc\nMiddle English bak\nEnglish back"
    }
  ],
  "links": [
    [
      "*bʰeg-",
      "Reconstruction:Proto-Indo-European/bʰeg-#Proto-Indo-European:_bend"
    ],
    [
      "*baką",
      "Reconstruction:Proto-Germanic/baką"
    ],
    [
      "*bak",
      "Reconstruction:Proto-West Germanic/bak"
    ],
    [
      "bæc",
      "bæc#Old_English:_bak"
    ],
    [
      "bak",
      "bak#Middle_English:_hind"
    ],
    [
      "bak",
      "bak#Middle_English"
    ],
    [
      "bæc",
      "bæc#Old_English"
    ],
    [
      "*bak",
      "Reconstruction:Proto-West Germanic/bak"
    ],
    [
      "*baką",
      "Reconstruction:Proto-Germanic/baką"
    ],
    [
      "*bʰeg-",
      "Reconstruction:Proto-Indo-European/bʰeg-"
    ],
    [
      "aphetic",
      "aphetic"
    ],
    [
      "aback",
      "aback#English"
    ],
    [
      "bak",
      "bak#Middle_Low_German"
    ],
    [
      "bak",
      "bak#Old_Saxon"
    ],
    [
      "bekling",
      "bekling#West_Frisian"
    ],
    [
      "bah",
      "bah#Old_High_German"
    ],
    [
      "bak",
      "bak#Norwegian"
    ],
    [
      "Bache",
      "Bache#German"
    ]
  ],
  "references": [],
  "descendants": [
    {
      "lang": "Tok Pisin",
      "lang_code": "tpi",
      "word": "bek"
    }
  ],
  "lexical": [
    {
      "pos": "adv",
      "glosses": [
        "To or in a previous condition or place.",
        "In a direction opposite to that in which someone or something is facing or normally pointing.",
        "In a direction opposite to the usual or desired direction of movement or progress, physically or figuratively.",
        "Towards, into or in the past."
      ],
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Source etymology 1 · variant 2/2

Original entry ↗
verb

To go in the reverse direction. · To support. · To change direction contrary to the normal pattern; that is, to shift anticlockwise in the northern hemisphere, or clockwise in the southern hemisphere. · To brace the yards so that the wind presses on the front of the sail, to slow the ship.

noun

The rear of the body, especially the part between the neck and the end of the spine and opposite the chest and belly. · The spine and associated tissues. · Large and attractive buttocks. · The part of a piece of clothing which covers the back.

adj

At or near the rear. · Returned or restored to a previous place or condition. · Not current. · Situated away from the main or most frequented areas.

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

Etymology tree Proto-Indo-European *bʰeg-der.? Proto-Germanic *baką Proto-West Germanic *bak Old English bæc Middle English bak English back From Middle English bak, from Old English bæc, from Proto-West Germanic *bak, from Proto-Germanic *baką, possibly from Proto-Indo-European *bʰeg- (“to bend”). The adverb represents an aphetic form of aback. Compare Middle Low German bak (“back”), from Old Saxon bak, and West Frisian bekling (“chair back”), Old High German bah, Swedish and Norwegian bak. Cognate with German Bache (“sow [adult female hog]”).

Relationships mentioned by the source

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

  • Inherited-form mentionbakenm
  • Inherited-form mentionbæcang
  • Inherited-form mention*bakgmw-pro
  • Inherited-form mention*bakągem-pro
  • Inherited-form mention*bʰeg-ine-pro · to bend
  • Cognate mentionbakgml · back
  • Cognate mentionbeklingfy · chair back
  • Cognate mentionbahgoh
  • Cognate mentionbakno
  • Cognate mentionBachede

This page abbreviates 34 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.

{
  "templates": [
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:bak<id:hind>",
        "id": "rear",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *bʰeg-der.?\nProto-Germanic *baką\nProto-West Germanic *bak\nOld English bæc\nMiddle English bak\nEnglish back\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"id\" : \"bend\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*bʰeg-\", \"lang\" : \"ine-pro\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*baką\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*bak\", \"status\" : \"ok\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Old English\", \"term\" : \"bæc\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Middle English\", \"term\" : \"bak\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"back\", \"lang\" : \"en\" }\" data-id=\"rear\" data-lang=\"en\" data-title=\"back\" id=\"English:_rear\">"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "bak"
      },
      "expansion": "Middle English bak"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "bæc"
      },
      "expansion": "Old English bæc"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
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      },
      "expansion": "Proto-West Germanic *bak"
    },
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        "2": "gem-pro",
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      },
      "expansion": "Proto-Germanic *baką"
    },
    {
      "name": "inh",
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        "1": "en",
        "2": "ine-pro",
        "3": "*bʰeg-",
        "t": "to bend"
      },
      "expansion": "Proto-Indo-European *bʰeg- (“to bend”)"
    },
    {
      "name": "cognate",
      "args": {
        "1": "gml",
        "2": "bak",
        "t": "back"
      },
      "expansion": "Middle Low German bak (“back”)"
    },
    {
      "name": "cognate",
      "args": {
        "1": "fy",
        "2": "bekling",
        "t": "chair back"
      },
      "expansion": "West Frisian bekling (“chair back”)"
    },
    {
      "name": "cognate",
      "args": {
        "1": "goh",
        "2": "bah"
      },
      "expansion": "Old High German bah"
    },
    {
      "name": "cognate",
      "args": {
        "1": "sv",
        "2": "-"
      },
      "expansion": "Swedish"
    },
    {
      "name": "cognate",
      "args": {
        "1": "no",
        "2": "bak"
      },
      "expansion": "Norwegian bak"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Bache",
        "3": "",
        "4": "sow [adult female hog]"
      },
      "expansion": "German Bache (“sow [adult female hog]”)"
    },
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        "3": "enm:bak<id:hind>",
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      },
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    }
  ],
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    ],
    [
      "*baką",
      "Reconstruction:Proto-Germanic/baką"
    ],
    [
      "*bak",
      "Reconstruction:Proto-West Germanic/bak"
    ],
    [
      "bæc",
      "bæc#Old_English:_bak"
    ],
    [
      "bak",
      "bak#Middle_English:_hind"
    ],
    [
      "bak",
      "bak#Middle_English"
    ],
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    ],
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      "Reconstruction:Proto-West Germanic/bak"
    ],
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    ],
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      "Reconstruction:Proto-Indo-European/bʰeg-"
    ],
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      "aback",
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    ],
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      "bak#Middle_Low_German"
    ],
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      "bak",
      "bak#Old_Saxon"
    ],
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    ],
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      "bah",
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    ],
    [
      "bak",
      "bak#Norwegian"
    ],
    [
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      "Bache#German"
    ]
  ],
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    {
      "pos": "verb",
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        "To go in the reverse direction.",
        "To support.",
        "To change direction contrary to the normal pattern; that is, to shift anticlockwise in the northern hemisphere, or clockwise in the southern hemisphere.",
        "To brace the yards so that the wind presses on the front of the sail, to slow the ship."
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Source etymology 2

Original entry ↗
noun

A large shallow vat; a cistern, tub, or trough, used by brewers, distillers, dyers, picklers, gluemakers, and others, for mixing or cooling wort, holding water, hot glue, etc. · A ferryboat.

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

Borrowed from French bac.

Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":bor",
        "3": "fr:bac",
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        "tree": "1"
      },
      "expansion": "[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"French\", \"term\" : \"bac\", \"status\" : \"missing\", \"lang\" : \"fr\" } ], \"keyword\" : \"bor\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"back\", \"lang\" : \"en\" }\" data-id=\"cistern\" data-lang=\"en\" data-title=\"back\" id=\"English:_cistern\">\nBorrowed from French bac."
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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 back →

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-YmFjaw