*SET-U

English word origin

Etymology of act

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

3 source sectionsExtended source reportWiktionary original ↗
In this entry · 3 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 · variant 1/2

Original entry ↗
noun

Something done, a deed. · Actuality. · Something done once and for all, as distinguished from a work. · A product of a legislative body, a statute.

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 From Middle English acte, from Old French acte, from Latin ācta (“register of events”), plural of āctum (“decree, law”), from agere (“to do, to act”), ultimately from Proto-Indo-European *h₂éǵeti. Compare German Akte (“file”). Partially displaced deed, from Old English dǣd (“act, deed”).

Relationships mentioned by the source

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

This page abbreviates 11 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.

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      "name": "etymon",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:acte",
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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\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\" }\" data-lang=\"en\" data-title=\"act\">"
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    },
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      "name": "der",
      "args": {
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        "2": "fro",
        "3": "acte"
      },
      "expansion": "Old French acte"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
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        "4": "",
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      "name": "der",
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      },
      "expansion": "Proto-Indo-European *h₂éǵeti"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Akte",
        "3": "",
        "4": "file"
      },
      "expansion": "German Akte (“file”)"
    },
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      "name": "noncog",
      "args": {
        "1": "ang",
        "2": "dǣd",
        "3": "",
        "4": "act, deed"
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    },
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    }
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      "Reconstruction:Proto-Indo-European/-eti"
    ],
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    ],
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      "*agō",
      "Reconstruction:Proto-Italic/agō#Proto-Italic:_drive"
    ],
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      "agō",
      "ago#Latin:_act"
    ],
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      "*-tós",
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    ],
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    ],
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    ],
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      "act",
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    ],
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    ],
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      "acte",
      "acte#Middle_English"
    ],
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      "acte",
      "acte#Old_French"
    ],
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      "ācta",
      "acta#Latin"
    ],
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      "āctum",
      "actum#Latin"
    ],
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      "agere",
      "ago#Latin"
    ],
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    ],
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    ],
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      "dǣd",
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      "word": "ak",
      "raw_tags": [
        "borrowed"
      ]
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  "lexical": [
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      "glosses": [
        "Something done, a deed.",
        "Actuality.",
        "Something done once and for all, as distinguished from a work.",
        "A product of a legislative body, a statute."
      ],
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Source etymology 1 · variant 2/2

Original entry ↗
verb

To do something. · To do (something); to perform. · To perform a theatrical role. · Of a play: to be acted out (well or badly).

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 From Middle English acte, from Old French acte, from Latin ācta (“register of events”), plural of āctum (“decree, law”), from agere (“to do, to act”), ultimately from Proto-Indo-European *h₂éǵeti. Compare German Akte (“file”). Partially displaced deed, from Old English dǣd (“act, deed”).

Relationships mentioned by the source

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

This page abbreviates 10 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.

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    },
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      "name": "der",
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      },
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    },
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      "name": "cog",
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        "2": "Akte",
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        "4": "file"
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      "expansion": "German Akte (“file”)"
    },
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      "name": "noncog",
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        "2": "dǣd",
        "3": "",
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    },
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      "Reconstruction:Proto-Indo-European/-eti"
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    ],
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    ],
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      "agō",
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    ],
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    ],
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}

Source etymology 2

Original entry ↗
adv

Clipping of actually.

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

Clipping of actually.

Inspect preserved source fields

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

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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 act →

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
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Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-YWN0