*SET-U

English word origin

Etymology of acting

Etymology tree Proto-Indo-European *h₂eǵ- Proto-Indo-European *-eti Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-tós Proto-Italic *-tos Latin -tus Latin āctus Latin ācta Old French actbo

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 ↗
verb

present participle and gerund of act

adj

Temporarily assuming the duties or authority of another person when they are unable to do their job.

noun

An action or deed. · Something done by a party—so called to avoid confusion with the legal senses of deed and action. · Pretending. · The occupation of an actor.

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

Etymology tree Proto-Indo-European *h₂eǵ- Proto-Indo-European *-eti Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-European *-tós Proto-Italic *-tos Latin -tus Latin āctus Latin ācta Old French actbor. Middle English acte English act English -ing English acting From act + -ing.

Inspect preserved source fields

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

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      "name": "ety",
      "args": {
        "1": "en",
        "2": ":af",
        "3": "act",
        "4": "-ing",
        "text": "+",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂eǵ-\nProto-Indo-European *-eti\nProto-Indo-European *h₂éǵeti\nProto-Italic *agō\nLatin agō\nProto-Indo-European *-tós\nProto-Italic *-tos\nLatin -tus\nLatin āctus\nLatin ācta\nOld French actbor.\nMiddle English acte\nEnglish act\nEnglish -ing\nEnglish acting\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"id\" : \"acts\", \"children\" : [ { \"terms\" : [ { \"id\" : \"made\", \"children\" : [ { \"terms\" : [ { \"id\" : \"act\", \"children\" : [ { \"terms\" : [ { \"id\" : \"drive\", \"children\" : [ { \"terms\" : [ { \"id\" : \"be driving\", \"children\" : [ { \"terms\" : [ { \"id\" : \"drive\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂eǵ-\", \"lang\" : \"ine-pro\" }, { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-eti\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*h₂éǵeti\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Italic\", \"term\" : \"*agō\", \"lang\" : \"itc-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Latin\", \"term\" : \"agō\", \"lang\" : \"la\" }, { \"id\" : \"past participle\", \"children\" : [ { \"terms\" : [ { \"id\" : \"verbal adjectives\", \"children\" : [ { \"terms\" : [ { \"id\" : \"verbal adjectives\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-tós\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Italic\", \"term\" : \"*-tos\", \"lang\" : \"itc-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Latin\", \"term\" : \"-tus\", \"lang\" : \"la\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"status\" : \"ok\", \"lang_name\" : \"Latin\", \"term\" : \"āctus\", \"lang\" : \"la\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"status\" : \"ok\", \"lang_name\" : \"Latin\", \"term\" : \"ācta\", \"lang\" : \"la\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Old French\", \"term\" : \"act\", \"status\" : \"inline\", \"lang\" : \"fro\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"acte\", \"status\" : \"ok\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"English\", \"term\" : \"act\", \"status\" : \"ok\", \"lang\" : \"en\" }, { \"children\" : [ ], \"lang_name\" : \"English\", \"term\" : \"-ing\", \"status\" : \"ambiguous\", \"lang\" : \"en\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"English\", \"term\" : \"acting\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"acting\">\nFrom act + -ing."
    },
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        "2": ":af",
        "3": "act",
        "4": "-ing",
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      },
      "expansion": "Etymology tree\nProto-Indo-European *h₂eǵ-\nProto-Indo-European *-eti\nProto-Indo-European *h₂éǵeti\nProto-Italic *agō\nLatin agō\nProto-Indo-European *-tós\nProto-Italic *-tos\nLatin -tus\nLatin āctus\nLatin ācta\nOld French actbor.\nMiddle English acte\nEnglish act\nEnglish -ing\nEnglish acting\nFrom act + -ing."
    }
  ],
  "links": [
    [
      "*h₂eǵ-",
      "Reconstruction:Proto-Indo-European/h₂eǵ-#Proto-Indo-European:_drive"
    ],
    [
      "*-eti",
      "Reconstruction:Proto-Indo-European/-eti"
    ],
    [
      "*h₂éǵeti",
      "Reconstruction:Proto-Indo-European/h₂éǵeti#Proto-Indo-European:_be_driving"
    ],
    [
      "*agō",
      "Reconstruction:Proto-Italic/agō#Proto-Italic:_drive"
    ],
    [
      "agō",
      "ago#Latin:_act"
    ],
    [
      "*-tós",
      "Reconstruction:Proto-Indo-European/-tós#Proto-Indo-European:_verbal_adjectives"
    ],
    [
      "*-tos",
      "Reconstruction:Proto-Italic/-tos#Proto-Italic:_verbal_adjectives"
    ],
    [
      "-tus",
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    ],
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      "āctus",
      "actus#Latin:_made"
    ],
    [
      "ācta",
      "acta#Latin:_acts"
    ],
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      "act",
      "act#Old_French"
    ],
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      "acte",
      "acte#Middle_English"
    ],
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      "act",
      "act#English"
    ],
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    ],
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      "act",
      "act#English"
    ],
    [
      "-ing",
      "-ing#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "present participle and gerund of act"
      ],
      "tags": [
        "form-of",
        "gerund",
        "participle",
        "present"
      ],
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    },
    {
      "pos": "adj",
      "glosses": [
        "Temporarily assuming the duties or authority of another person when they are unable to do their job."
      ],
      "tags": [
        "not-comparable"
      ],
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    },
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      "glosses": [
        "An action or deed.",
        "Something done by a party—so called to avoid confusion with the legal senses of deed and action.",
        "Pretending.",
        "The occupation of an actor."
      ],
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        "archaic",
        "countable",
        "uncountable"
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    }
  ],
  "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 acting →

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-YWN0aW5n