*SET-U

English word origin

Etymology of thro

* Abbreviation of through.

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.

Source etymology 1

Original entry ↗
prep

through

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

* Abbreviation of through.

Inspect preserved source fields

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

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      "args": {
        "1": "en",
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      "expansion": "Abbreviation of through"
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  "links": [
    [
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  "references": [],
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      "glosses": [
        "through"
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Source etymology 2

Original entry ↗
adj

Eager; earnest; vehement. · Bold.

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

From Middle English thro, thra, from Old Norse þrár (“stubborn, obstinate, persevering”), from Proto-Germanic *þrawaz (“obstinate”), from Proto-Indo-European *ter- (“to grind, drill, turn”).

Relationships mentioned by the source

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

  • Inherited-form mentionthroenm
  • Derivation mentionþrárnon
  • Derivation mention*þrawazgem-pro
  • Derivation mention*ter-ine-pro
Inspect preserved source fields

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

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        "1": "en",
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        "3": "thro"
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      "expansion": "Middle English thro"
    },
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      "name": "der",
      "args": {
        "1": "en",
        "2": "non",
        "3": "þrár",
        "4": "",
        "5": "stubborn, obstinate, persevering"
      },
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    },
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        "2": "gem-pro",
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        "4": "",
        "5": "obstinate"
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    },
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        "4": "",
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      },
      "expansion": "Proto-Indo-European *ter- (“to grind, drill, turn”)"
    }
  ],
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    [
      "thro",
      "thro#Middle_English"
    ],
    [
      "thra",
      "thra#Middle_English"
    ],
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      "þrár",
      "þrár#Old_Norse"
    ],
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      "*þrawaz",
      "Reconstruction:Proto-Germanic/þrawaz"
    ],
    [
      "*ter-",
      "Reconstruction:Proto-Indo-European/ter-"
    ]
  ],
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  "descendants": [],
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        "Eager; earnest; vehement.",
        "Bold."
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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 thro →

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-dGhybw