*SET-U

English word origin

Etymology of tough

From Middle English tough, towgh, tou, toȝ, from Old English tōh (“tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy”), from Proto-West Germanic *tą̄h(ī), from Proto-Germanic *tanhuz (“fitting; c

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 ↗
adj

Of a material, strong and resilient; sturdy. · Of food, difficult to cut or chew. · Of a person or animal, rugged or physically hardy. · Of a person, stubborn or persistent; capable of stubbornness or persistence.

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

From Middle English tough, towgh, tou, toȝ, from Old English tōh (“tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy”), from Proto-West Germanic *tą̄h(ī), from Proto-Germanic *tanhuz (“fitting; clinging; tenacious; tough”), from *tinganą (“to press upon, throng”), from Proto-Indo-European *denḱ- (“to bite”). Cognates Cognate with Saterland Frisian toai (“tough”), Bavarian zaach, zach (“tough”), Dutch taai (“tough”), German zäh, zähe (“tough”), Limburgish tiee (“tough”), Luxembourgish zéi (“tough”); also Ancient Greek δάκνω (dáknō, “to bite”), Albanian danë, darë (“tongs; pincers; pliers”), Sanskrit दशति (daśati, “to bite”).

Relationships mentioned by the source

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

  • Root classification mention*denḱ-ine-pro
  • Inherited-form mentiontoughenm
  • Inherited-form mentiontōhang · tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy
  • Inherited-form mention*tą̄h(ī)gmw-pro
  • Inherited-form mention*tanhuzgem-pro · fitting; clinging; tenacious; tough
  • Derivation mention*denḱ-ine-pro · to bite
  • Cognate mentiontoaistq · tough
  • Cognate mentionzaachbar
  • Cognate mentiontaainl · tough
  • Cognate mentionzähde
  • Cognate mentiontieeli · tough
  • Cognate mentionzéilb · tough
  • Cognate mentionδάκνωgrc · to bite
  • Cognate mentiondanësq
  • Cognate mentionदशतिsa · to bite

This page abbreviates 6 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": "root",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*denḱ-"
      },
      "expansion": ""
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "tough"
      },
      "expansion": "Middle English tough"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "tōh",
        "t": "tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy"
      },
      "expansion": "Old English tōh (“tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*tą̄h(ī)"
      },
      "expansion": "Proto-West Germanic *tą̄h(ī)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*tanhuz",
        "t": "fitting; clinging; tenacious; tough"
      },
      "expansion": "Proto-Germanic *tanhuz (“fitting; clinging; tenacious; tough”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*denḱ-",
        "t": "to bite"
      },
      "expansion": "Proto-Indo-European *denḱ- (“to bite”)"
    },
    {
      "name": "col-top",
      "args": {
        "1": "2",
        "2": "cog"
      },
      "expansion": "Cognates"
    },
    {
      "name": "cog",
      "args": {
        "1": "stq",
        "2": "toai",
        "t": "tough"
      },
      "expansion": "Saterland Frisian toai (“tough”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "bar",
        "2": "zaach"
      },
      "expansion": "Bavarian zaach"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "taai",
        "t": "tough"
      },
      "expansion": "Dutch taai (“tough”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "zäh"
      },
      "expansion": "German zäh"
    },
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        "t": "tough"
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      "expansion": "Limburgish tiee (“tough”)"
    },
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      "name": "cog",
      "args": {
        "1": "lb",
        "2": "zéi",
        "t": "tough"
      },
      "expansion": "Luxembourgish zéi (“tough”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "δάκνω",
        "t": "to bite"
      },
      "expansion": "Ancient Greek δάκνω (dáknō, “to bite”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sq",
        "2": "danë"
      },
      "expansion": "Albanian danë"
    },
    {
      "name": "cog",
      "args": {
        "1": "sa",
        "2": "दशति",
        "t": "to bite"
      },
      "expansion": "Sanskrit दशति (daśati, “to bite”)"
    }
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      "tou#Middle_English"
    ],
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      "toȝ",
      "toȝ#Middle_English"
    ],
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      "tōh",
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    ],
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      "*tą̄h(ī)",
      "Reconstruction:Proto-West Germanic/tą̄h(ī)"
    ],
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      "*tanhuz",
      "Reconstruction:Proto-Germanic/tanhuz"
    ],
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      "*tinganą",
      "Reconstruction:Proto-Germanic/tinganą"
    ],
    [
      "*denḱ-",
      "Reconstruction:Proto-Indo-European/denḱ-"
    ],
    [
      "toai",
      "toai#Saterland_Frisian"
    ],
    [
      "zaach",
      "zaach#Bavarian"
    ],
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      "zach",
      "zach#Bavarian"
    ],
    [
      "taai",
      "taai#Dutch"
    ],
    [
      "zäh",
      "zäh#German"
    ],
    [
      "zähe",
      "zähe#German"
    ],
    [
      "tiee",
      "tiee#Limburgish"
    ],
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      "zéi",
      "zéi#Luxembourgish"
    ],
    [
      "δάκνω",
      "δάκνω#Ancient_Greek"
    ],
    [
      "danë",
      "danë#Albanian"
    ],
    [
      "darë",
      "darë#Albanian"
    ],
    [
      "दशति",
      "दशति#Sanskrit"
    ]
  ],
  "references": [],
  "descendants": [
    {
      "lang": "German",
      "lang_code": "de",
      "word": "taff",
      "raw_tags": [
        "borrowed"
      ]
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      "lang": "Swedish",
      "lang_code": "sv",
      "word": "tuff",
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        "borrowed"
      ]
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  "lexical": [
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      "glosses": [
        "Of a material, strong and resilient; sturdy.",
        "Of food, difficult to cut or chew.",
        "Of a person or animal, rugged or physically hardy.",
        "Of a person, stubborn or persistent; capable of stubbornness or persistence."
      ],
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}

Unnumbered source etymology · variant 2/2

Original entry ↗
intj

Used to indicate lack of sympathy

verb

To endure. · To toughen.

noun

A person who obtains things by force; a thug or bully.

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

From Middle English tough, towgh, tou, toȝ, from Old English tōh (“tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy”), from Proto-West Germanic *tą̄h(ī), from Proto-Germanic *tanhuz (“fitting; clinging; tenacious; tough”), from *tinganą (“to press upon, throng”), from Proto-Indo-European *denḱ- (“to bite”). Cognates Cognate with Saterland Frisian toai (“tough”), Bavarian zaach, zach (“tough”), Dutch taai (“tough”), German zäh, zähe (“tough”), Limburgish tiee (“tough”), Luxembourgish zéi (“tough”); also Ancient Greek δάκνω (dáknō, “to bite”), Albanian danë, darë (“tongs; pincers; pliers”), Sanskrit दशति (daśati, “to bite”).

Relationships mentioned by the source

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

  • Root classification mention*denḱ-ine-pro
  • Inherited-form mentiontoughenm
  • Inherited-form mentiontōhang · tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy
  • Inherited-form mention*tą̄h(ī)gmw-pro
  • Inherited-form mention*tanhuzgem-pro · fitting; clinging; tenacious; tough
  • Derivation mention*denḱ-ine-pro · to bite
  • Cognate mentiontoaistq · tough
  • Cognate mentionzaachbar
  • Cognate mentiontaainl · tough
  • Cognate mentionzähde
  • Cognate mentiontieeli · tough
  • Cognate mentionzéilb · tough
  • Cognate mentionδάκνωgrc · to bite
  • Cognate mentiondanësq
  • Cognate mentionदशतिsa · to bite
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": "*denḱ-"
      },
      "expansion": ""
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "tough"
      },
      "expansion": "Middle English tough"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "tōh",
        "t": "tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy"
      },
      "expansion": "Old English tōh (“tough, tenacious, holding fast together; pliant; sticky, glutinous, clammy”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*tą̄h(ī)"
      },
      "expansion": "Proto-West Germanic *tą̄h(ī)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*tanhuz",
        "t": "fitting; clinging; tenacious; tough"
      },
      "expansion": "Proto-Germanic *tanhuz (“fitting; clinging; tenacious; tough”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*denḱ-",
        "t": "to bite"
      },
      "expansion": "Proto-Indo-European *denḱ- (“to bite”)"
    },
    {
      "name": "col-top",
      "args": {
        "1": "2",
        "2": "cog"
      },
      "expansion": "Cognates"
    },
    {
      "name": "cog",
      "args": {
        "1": "stq",
        "2": "toai",
        "t": "tough"
      },
      "expansion": "Saterland Frisian toai (“tough”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "bar",
        "2": "zaach"
      },
      "expansion": "Bavarian zaach"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "taai",
        "t": "tough"
      },
      "expansion": "Dutch taai (“tough”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "zäh"
      },
      "expansion": "German zäh"
    },
    {
      "name": "cog",
      "args": {
        "1": "li",
        "2": "tiee",
        "t": "tough"
      },
      "expansion": "Limburgish tiee (“tough”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "lb",
        "2": "zéi",
        "t": "tough"
      },
      "expansion": "Luxembourgish zéi (“tough”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "δάκνω",
        "t": "to bite"
      },
      "expansion": "Ancient Greek δάκνω (dáknō, “to bite”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sq",
        "2": "danë"
      },
      "expansion": "Albanian danë"
    },
    {
      "name": "cog",
      "args": {
        "1": "sa",
        "2": "दशति",
        "t": "to bite"
      },
      "expansion": "Sanskrit दशति (daśati, “to bite”)"
    }
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    ],
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      "tou#Middle_English"
    ],
    [
      "toȝ",
      "toȝ#Middle_English"
    ],
    [
      "tōh",
      "toh#Old_English"
    ],
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      "*tą̄h(ī)",
      "Reconstruction:Proto-West Germanic/tą̄h(ī)"
    ],
    [
      "*tanhuz",
      "Reconstruction:Proto-Germanic/tanhuz"
    ],
    [
      "*tinganą",
      "Reconstruction:Proto-Germanic/tinganą"
    ],
    [
      "*denḱ-",
      "Reconstruction:Proto-Indo-European/denḱ-"
    ],
    [
      "toai",
      "toai#Saterland_Frisian"
    ],
    [
      "zaach",
      "zaach#Bavarian"
    ],
    [
      "zach",
      "zach#Bavarian"
    ],
    [
      "taai",
      "taai#Dutch"
    ],
    [
      "zäh",
      "zäh#German"
    ],
    [
      "zähe",
      "zähe#German"
    ],
    [
      "tiee",
      "tiee#Limburgish"
    ],
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    ],
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    ],
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      "danë",
      "danë#Albanian"
    ],
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      "darë",
      "darë#Albanian"
    ],
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      "दशति",
      "दशति#Sanskrit"
    ]
  ],
  "references": [],
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      ],
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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 tough →

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-dG91Z2g