*SET-U

English word origin

Etymology of aitch

From Middle English ache, borrowed from Old French ache, from Vulgar Latin *acca. The source is unclear, but may descend from the vowelless alphabetic sequence ha ka 'H, K' (becoming [aka] when the [h] ceased to be prono

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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

The name of the Latin script letter H/h.

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

From Middle English ache, borrowed from Old French ache, from Vulgar Latin *acca. The source is unclear, but may descend from the vowelless alphabetic sequence ha ka 'H, K' (becoming [aka] when the [h] ceased to be pronounced), as K had low frequency in Late Latin. Doublet of ecchi.

Relationships mentioned by the source

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

  • Inherited-form mentionacheenm
  • Derivation mentionachefro
  • Doublet mentionecchien
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": "ache"
      },
      "expansion": "Middle English ache"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "fro",
        "3": "ache"
      },
      "expansion": "Old French ache"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la-vul",
        "3": "*acca"
      },
      "expansion": "Vulgar Latin *acca"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "ecchi"
      },
      "expansion": "Doublet of ecchi"
    }
  ],
  "links": [
    [
      "ache",
      "ache#Middle_English"
    ],
    [
      "ache",
      "ache#Old_French"
    ],
    [
      "*acca",
      "Reconstruction:Latin/acca"
    ],
    [
      "ha",
      "ha#Latin"
    ],
    [
      "ka",
      "ka#Latin"
    ],
    [
      "ecchi",
      "ecchi#English"
    ]
  ],
  "references": [],
  "descendants": [
    {
      "lang": "Arabic",
      "lang_code": "ar",
      "word": "إِتْش",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "ʔitš"
    },
    {
      "lang": "Greek",
      "lang_code": "el",
      "word": "έιτς",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "éits"
    },
    {
      "lang_code": "ja",
      "lang": "Japanese",
      "raw_tags": [
        "borrowed"
      ],
      "descendants": [
        {
          "lang": "English",
          "lang_code": "en",
          "word": "ecchi",
          "raw_tags": [
            "borrowed"
          ]
        }
      ]
    },
    {
      "lang": "Japanese",
      "lang_code": "ja",
      "word": "エイチ",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "eichi",
      "descendants": [
        {
          "lang": "English",
          "lang_code": "en",
          "word": "ecchi",
          "raw_tags": [
            "borrowed"
          ]
        }
      ]
    },
    {
      "lang": "Japanese",
      "lang_code": "ja",
      "word": "エッチ",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "etchi",
      "descendants": [
        {
          "lang": "English",
          "lang_code": "en",
          "word": "ecchi",
          "raw_tags": [
            "borrowed"
          ]
        }
      ]
    },
    {
      "lang": "Korean",
      "lang_code": "ko",
      "word": "에이치",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "eichi"
    },
    {
      "lang": "Malay",
      "lang_code": "ms",
      "word": "hec",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Persian",
      "lang_code": "fa",
      "word": "اِچ",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "eč"
    },
    {
      "lang": "Persian",
      "lang_code": "fa",
      "word": "اِیچ",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "eyč"
    },
    {
      "lang": "Russian",
      "lang_code": "ru",
      "word": "эйч",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "ejč"
    },
    {
      "lang": "Tagalog",
      "lang_code": "tl",
      "word": "eyts",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Thai",
      "lang_code": "th",
      "word": "เอช",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "éech"
    },
    {
      "lang": "Thai",
      "lang_code": "th",
      "word": "เฮช",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "héech"
    }
  ],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "The name of the Latin script letter H/h."
      ],
      "tags": [],
      "recordId": "00fdc4cf95aad1cea86cefbdaf9cc8f45efb6ade42a478f0c92d1cf6e32af27c",
      "rawRecordSha256": "45aa28f11bd9ceca4e52be031f3b5a7abce7f11575a9c0201bad5c337141fc10",
      "sourceRecordOrdinal": 209493
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "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 aitch →

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-YWl0Y2g