*SET-U

English word origin

Etymology of forty

Etymology tree Proto-Indo-European *kʷetwṓr Proto-Germanic *fedwōr Proto-Indo-European *déḱm̥ Proto-Indo-European *-t Proto-Indo-European *déḱm̥-t(-s) Proto-Germanic *tegun(dz) Proto-Germanic *tigiwiz Proto-Germanic *fed

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 ↗
num

The cardinal number occurring after thirty-nine and before forty-one, represented in Roman numerals as XL and in Arabic numerals as 40.

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

Etymology tree Proto-Indo-European *kʷetwṓr Proto-Germanic *fedwōr Proto-Indo-European *déḱm̥ Proto-Indo-European *-t Proto-Indo-European *déḱm̥-t(-s) Proto-Germanic *tegun(dz) Proto-Germanic *tigiwiz Proto-Germanic *fedwōr tigiwiz Proto-West Germanic *feuwar tigiwi Old English fēowertiġ Middle English fourty English forty From Middle English fourty, forty, from Old English fēowertiġ, ultimately from Proto-Germanic *fedwōr tigiwiz (“forty”). By surface analysis, four + -ty.

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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    {
      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:fourty",
        "id": "number",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *kʷetwṓr\nProto-Germanic *fedwōr\nProto-Indo-European *déḱm̥\nProto-Indo-European *-t\nProto-Indo-European *déḱm̥-t(-s)\nProto-Germanic *tegun(dz)\nProto-Germanic *tigiwiz\nProto-Germanic *fedwōr tigiwiz\nProto-West Germanic *feuwar tigiwi\nOld English fēowertiġ\nMiddle English fourty\nEnglish forty\n[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*fedwōr\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" }, { \"alt\" : \"*tigiwiz\", \"children\" : [ { \"terms\" : [ { \"alt\" : \"*tegun(dz)\", \"lang_name\" : \"Proto-Germanic\", \"status\" : \"inline\", \"children\" : [ { \"terms\" : [ { \"alt\" : \"*déḱm̥-t(-s)\", \"children\" : [ { \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*déḱm̥\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" }, { \"alt\" : \"*-t\", \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-ts\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*déḱm̥t\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*teguz\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*fedwōr tigiwiz\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*feuwar tigiwi\", \"status\" : \"ok\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Old English\", \"term\" : \"fēowertiġ\", \"status\" : \"ok\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"fourty\", \"status\" : \"ok\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"forty\", \"lang\" : \"en\" }\" data-id=\"number\" data-lang=\"en\" data-title=\"forty\" id=\"English:_number\">"
    },
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      "name": "inh",
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        "2": "enm",
        "3": "fourty"
      },
      "expansion": "Middle English fourty"
    },
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      "name": "inh",
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        "1": "en",
        "2": "ang",
        "3": "fēowertiġ"
      },
      "expansion": "Old English fēowertiġ"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*fedwōr tigiwiz",
        "4": "",
        "5": "forty"
      },
      "expansion": "Proto-Germanic *fedwōr tigiwiz (“forty”)"
    },
    {
      "name": "surf",
      "args": {
        "1": "en",
        "2": "four",
        "3": "-ty<id:multiple>"
      },
      "expansion": "By surface analysis, four + -ty"
    },
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      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":inh",
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      },
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    }
  ],
  "links": [
    [
      "*kʷetwṓr",
      "Reconstruction:Proto-Indo-European/kʷetwóres"
    ],
    [
      "*fedwōr",
      "Reconstruction:Proto-Germanic/fedwōr"
    ],
    [
      "*déḱm̥",
      "Reconstruction:Proto-Indo-European/déḱm̥"
    ],
    [
      "*-t",
      "Reconstruction:Proto-Indo-European/-ts"
    ],
    [
      "*déḱm̥-t(-s)",
      "Reconstruction:Proto-Indo-European/déḱm̥t"
    ],
    [
      "*tigiwiz",
      "Reconstruction:Proto-Germanic/teguz"
    ],
    [
      "*fedwōr tigiwiz",
      "Reconstruction:Proto-Germanic/fedwōr tigiwiz"
    ],
    [
      "*feuwar tigiwi",
      "Reconstruction:Proto-West Germanic/feuwar tigiwi"
    ],
    [
      "fēowertiġ",
      "feowertig#Old_English"
    ],
    [
      "fourty",
      "fourty#Middle_English"
    ],
    [
      "fourty",
      "fourty#Middle_English"
    ],
    [
      "forty",
      "forty#Middle_English"
    ],
    [
      "fēowertiġ",
      "feowertig#Old_English"
    ],
    [
      "*fedwōr tigiwiz",
      "Reconstruction:Proto-Germanic/fedwōr tigiwiz"
    ],
    [
      "four",
      "four#English"
    ],
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      "-ty",
      "-ty#English:_multiple"
    ]
  ],
  "references": [],
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    {
      "lang": "Tok Pisin",
      "lang_code": "tpi",
      "word": "foti"
    }
  ],
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        "The cardinal number occurring after thirty-nine and before forty-one, represented in Roman numerals as XL and in Arabic numerals as 40."
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Source etymology 1 · variant 2/2

Original entry ↗
noun

A bottle (of beer) containing forty fluid ounces.

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

Etymology tree Proto-Indo-European *kʷetwṓr Proto-Germanic *fedwōr Proto-Indo-European *déḱm̥ Proto-Indo-European *-t Proto-Indo-European *déḱm̥-t(-s) Proto-Germanic *tegun(dz) Proto-Germanic *tigiwiz Proto-Germanic *fedwōr tigiwiz Proto-West Germanic *feuwar tigiwi Old English fēowertiġ Middle English fourty English forty From Middle English fourty, forty, from Old English fēowertiġ, ultimately from Proto-Germanic *fedwōr tigiwiz (“forty”). By surface analysis, four + -ty.

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": "etymon",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:fourty",
        "id": "number",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *kʷetwṓr\nProto-Germanic *fedwōr\nProto-Indo-European *déḱm̥\nProto-Indo-European *-t\nProto-Indo-European *déḱm̥-t(-s)\nProto-Germanic *tegun(dz)\nProto-Germanic *tigiwiz\nProto-Germanic *fedwōr tigiwiz\nProto-West Germanic *feuwar tigiwi\nOld English fēowertiġ\nMiddle English fourty\nEnglish forty\n[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*fedwōr\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" }, { \"alt\" : \"*tigiwiz\", \"children\" : [ { \"terms\" : [ { \"alt\" : \"*tegun(dz)\", \"lang_name\" : \"Proto-Germanic\", \"status\" : \"inline\", \"children\" : [ { \"terms\" : [ { \"alt\" : \"*déḱm̥-t(-s)\", \"children\" : [ { \"terms\" : [ { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*déḱm̥\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" }, { \"alt\" : \"*-t\", \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-ts\", \"status\" : \"missing\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*déḱm̥t\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*teguz\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*fedwōr tigiwiz\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*feuwar tigiwi\", \"status\" : \"ok\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Old English\", \"term\" : \"fēowertiġ\", \"status\" : \"ok\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"fourty\", \"status\" : \"ok\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"forty\", \"lang\" : \"en\" }\" data-id=\"number\" data-lang=\"en\" data-title=\"forty\" id=\"English:_number\">"
    },
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      "name": "inh",
      "args": {
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        "2": "enm",
        "3": "fourty"
      },
      "expansion": "Middle English fourty"
    },
    {
      "name": "inh",
      "args": {
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        "2": "ang",
        "3": "fēowertiġ"
      },
      "expansion": "Old English fēowertiġ"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*fedwōr tigiwiz",
        "4": "",
        "5": "forty"
      },
      "expansion": "Proto-Germanic *fedwōr tigiwiz (“forty”)"
    },
    {
      "name": "surf",
      "args": {
        "1": "en",
        "2": "four",
        "3": "-ty<id:multiple>"
      },
      "expansion": "By surface analysis, four + -ty"
    },
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        "2": ":inh",
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      },
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    }
  ],
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      "Reconstruction:Proto-Indo-European/kʷetwóres"
    ],
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    ],
    [
      "*déḱm̥",
      "Reconstruction:Proto-Indo-European/déḱm̥"
    ],
    [
      "*-t",
      "Reconstruction:Proto-Indo-European/-ts"
    ],
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      "*déḱm̥-t(-s)",
      "Reconstruction:Proto-Indo-European/déḱm̥t"
    ],
    [
      "*tigiwiz",
      "Reconstruction:Proto-Germanic/teguz"
    ],
    [
      "*fedwōr tigiwiz",
      "Reconstruction:Proto-Germanic/fedwōr tigiwiz"
    ],
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      "*feuwar tigiwi",
      "Reconstruction:Proto-West Germanic/feuwar tigiwi"
    ],
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      "fēowertiġ",
      "feowertig#Old_English"
    ],
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      "fourty",
      "fourty#Middle_English"
    ],
    [
      "fourty",
      "fourty#Middle_English"
    ],
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      "forty",
      "forty#Middle_English"
    ],
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      "fēowertiġ",
      "feowertig#Old_English"
    ],
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      "*fedwōr tigiwiz",
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    ],
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      "four",
      "four#English"
    ],
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      "-ty",
      "-ty#English:_multiple"
    ]
  ],
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        "A bottle (of beer) containing forty fluid ounces."
      ],
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        "US",
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Source etymology 2

Original entry ↗
adj

Resembling or characteristic of a fort.

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

From fort + y.

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 forty →

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-Zm9ydHk