*SET-U

English word origin

Etymology of trust

From Middle English trust, trost (“trust, protection”). Long considered a borrowing from Old Norse traust (“confidence, help, protection”), from Proto-Germanic *traustą, but the root vocalism is incompatible, so trust ha

1 source sectionExtended source reportWiktionary original ↗
In this entry · 1 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

Original entry ↗
noun

Confidence in or reliance on some person or quality. · Dependence upon something in the future; hope. · Confidence in the future payment for goods or services supplied; credit. · That which is committed or entrusted; something received in confidence; a charge.

intj

Ellipsis of trust me, often used sarcastically or self-mockingly.

verb

To place confidence in, to rely on, to confide in. · To have faith in; to rely on for continuing support or aid. · To give credence to; to believe; to credit. · To hope confidently; to believe (usually with a phrase or infinitive clause as the object)

adj

Secure, safe. · Faithful, dependable. · of or relating to a trust.

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

From Middle English trust, trost (“trust, protection”). Long considered a borrowing from Old Norse traust (“confidence, help, protection”), from Proto-Germanic *traustą, but the root vocalism is incompatible, so trust has come to be considered a reflex of an unattested Old English *trust, from a rare zero-grade Proto-Germanic variant of the same root also attested in Middle High German getrüste (“host”). Ultimately from Proto-Indo-European *deru- (“be firm, hard, solid”). Cognates Cognate with Saterland Frisian Traast (“comfort, solace”), West Frisian treast (“comfort, consolation, solace”), Dutch troost (“comfort, consolation”), German Trost (“comfort, consolation”), Low German Troost (“comfort, consolation”), Luxembourgish Trouscht (“consolation”), Danish trøst (“comfort, solace”), Icelandic traust (“faith, trust; confidence”), Norwegian Nynorsk trøst, trøyst (“consolation”), Swedish tröst (“comfort, consolation”), Gothic 𐍄𐍂𐌰𐌿𐍃𐍄𐌹 (trausti, “covenant, pact”). Doublet of tryst. More at true, tree.

Relationships mentioned by the source

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

  • Inherited-form mentiontrustenm · trust, protection
  • Cognate mentiontraustnon · confidence, help, protection
  • Cognate mention*traustągem-pro
  • Inherited-form mention*trustang
  • Cognate mentiongetrüstegmh · host
  • Derivation mention*deru-ine-pro · be firm, hard, solid
  • Cognate mentionTraaststq · comfort, solace
  • Cognate mentiontreastfy · comfort, consolation, solace
  • Cognate mentiontroostnl · comfort, consolation
  • Cognate mentionTrostde · comfort, consolation
  • Cognate mentionTroostnds · comfort, consolation
  • Cognate mentionTrouschtlb · consolation
  • Cognate mentiontrøstda · comfort, solace
  • Cognate mentiontraustis · faith, trust; confidence
  • Cognate mentiontrøstnn
  • Cognate mentiontröstsv · comfort, consolation
  • Cognate mention𐍄𐍂𐌰𐌿𐍃𐍄𐌹got · covenant, pact
  • Doublet mentiontrysten

This page abbreviates 14 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": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "trust",
        "4": "trust, trost",
        "t": "trust, protection"
      },
      "expansion": "Middle English trust, trost (“trust, protection”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "non",
        "2": "traust",
        "t": "confidence, help, protection"
      },
      "expansion": "Old Norse traust (“confidence, help, protection”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "gem-pro",
        "2": "*traustą"
      },
      "expansion": "Proto-Germanic *traustą"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "*trust"
      },
      "expansion": "Old English *trust"
    },
    {
      "name": "cog",
      "args": {
        "1": "gmh",
        "2": "getrüste",
        "t": "host"
      },
      "expansion": "Middle High German getrüste (“host”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*deru-",
        "t": "be firm, hard, solid"
      },
      "expansion": "Proto-Indo-European *deru- (“be firm, hard, solid”)"
    },
    {
      "name": "col-top",
      "args": {
        "1": "2",
        "2": "cog"
      },
      "expansion": "Cognates"
    },
    {
      "name": "cog",
      "args": {
        "1": "stq",
        "2": "Traast",
        "t": "comfort, solace"
      },
      "expansion": "Saterland Frisian Traast (“comfort, solace”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fy",
        "2": "treast",
        "t": "comfort, consolation, solace"
      },
      "expansion": "West Frisian treast (“comfort, consolation, solace”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "troost",
        "t": "comfort, consolation"
      },
      "expansion": "Dutch troost (“comfort, consolation”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Trost",
        "t": "comfort, consolation"
      },
      "expansion": "German Trost (“comfort, consolation”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nds",
        "2": "Troost",
        "t": "comfort, consolation"
      },
      "expansion": "Low German Troost (“comfort, consolation”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "lb",
        "2": "Trouscht",
        "t": "consolation"
      },
      "expansion": "Luxembourgish Trouscht (“consolation”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "trøst",
        "t": "comfort, solace"
      },
      "expansion": "Danish trøst (“comfort, solace”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "is",
        "2": "traust",
        "t": "faith, trust; confidence"
      },
      "expansion": "Icelandic traust (“faith, trust; confidence”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nn",
        "2": "trøst"
      },
      "expansion": "Norwegian Nynorsk trøst"
    },
    {
      "name": "cog",
      "args": {
        "1": "sv",
        "2": "tröst",
        "t": "comfort, consolation"
      },
      "expansion": "Swedish tröst (“comfort, consolation”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "got",
        "2": "𐍄𐍂𐌰𐌿𐍃𐍄𐌹",
        "t": "covenant, pact"
      },
      "expansion": "Gothic 𐍄𐍂𐌰𐌿𐍃𐍄𐌹 (trausti, “covenant, pact”)"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "tryst"
      },
      "expansion": "Doublet of tryst"
    }
  ],
  "links": [
    [
      "trust, trost",
      "trust#Middle_English"
    ],
    [
      "traust",
      "traust#Old_Norse"
    ],
    [
      "*traustą",
      "Reconstruction:Proto-Germanic/traustą"
    ],
    [
      "*trust",
      "Reconstruction:Old English/trust"
    ],
    [
      "getrüste",
      "getrüste#Middle_High_German"
    ],
    [
      "*deru-",
      "Reconstruction:Proto-Indo-European/deru-"
    ],
    [
      "Traast",
      "Traast#Saterland_Frisian"
    ],
    [
      "treast",
      "treast#West_Frisian"
    ],
    [
      "troost",
      "troost#Dutch"
    ],
    [
      "Trost",
      "Trost#German"
    ],
    [
      "Troost",
      "Troost#Low_German"
    ],
    [
      "Trouscht",
      "Trouscht#Luxembourgish"
    ],
    [
      "trøst",
      "trøst#Danish"
    ],
    [
      "traust",
      "traust#Icelandic"
    ],
    [
      "trøst",
      "trøst#Norwegian_Nynorsk"
    ],
    [
      "trøyst",
      "trøyst#Norwegian_Nynorsk"
    ],
    [
      "tröst",
      "tröst#Swedish"
    ],
    [
      "𐍄𐍂𐌰𐌿𐍃𐍄𐌹",
      "𐍄𐍂𐌰𐌿𐍃𐍄𐌹#Gothic"
    ],
    [
      "tryst",
      "tryst#English"
    ],
    [
      "true",
      "true"
    ],
    [
      "tree",
      "tree"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "Confidence in or reliance on some person or quality.",
        "Dependence upon something in the future; hope.",
        "Confidence in the future payment for goods or services supplied; credit.",
        "That which is committed or entrusted; something received in confidence; a charge."
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      "pos": "intj",
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        "Ellipsis of trust me, often used sarcastically or self-mockingly."
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    {
      "pos": "verb",
      "glosses": [
        "To place confidence in, to rely on, to confide in.",
        "To have faith in; to rely on for continuing support or aid.",
        "To give credence to; to believe; to credit.",
        "To hope confidently; to believe (usually with a phrase or infinitive clause as the object)"
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    {
      "pos": "adj",
      "glosses": [
        "Secure, safe.",
        "Faithful, dependable.",
        "of or relating to a trust."
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  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 14,
    "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 trust →

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-dHJ1c3Q