*SET-U

English word origin

Etymology of react

Etymology tree Proto-Italic *wre- Latin re-der. Old French re-bor. Middle English re- English re- Proto-Indo-European *h₂eǵ- Proto-Indo-European *-eti Proto-Indo-European *h₂éǵeti Proto-Italic *agō Latin agō Proto-Indo-E

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

An emoji used to express a reaction to a post on social media.

verb

To act in response. · To act or perform a second time; to do over again; to reenact. · To return an impulse or impression; to resist the action of another body by an opposite force · To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition.

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

Etymology tree Proto-Italic *wre- Latin re-der. Old French re-bor. Middle English re- English re- 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 react From re- + act. Piecewise doublet of redact.

This page abbreviates 2 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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      "args": {
        "1": "en",
        "2": ":af",
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      },
      "expansion": "Etymology tree\nProto-Italic *wre-\nLatin re-der.\nOld French re-bor.\nMiddle English re-\nEnglish re-\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 react\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"id\" : \"again\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Italic\", \"term\" : \"*wre-\", \"lang\" : \"itc-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Latin\", \"term\" : \"re-\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"Old French\", \"term\" : \"re-\", \"status\" : \"ok\", \"lang\" : \"fro\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"re-\", \"status\" : \"inline\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"English\", \"term\" : \"re-\", \"status\" : \"ok\", \"lang\" : \"en\" }, { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"keyword_abbrev\" : \"bor.\", \"keyword_label\" : \"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\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang_name\" : \"English\", \"term\" : \"react\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"react\">"
    },
    {
      "name": "prefix",
      "args": {
        "1": "en",
        "2": "re",
        "3": "act"
      },
      "expansion": "re- + act"
    },
    {
      "name": "pwd",
      "args": {
        "1": "en",
        "2": "redact"
      },
      "expansion": "Piecewise doublet of redact"
    },
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":af",
        "3": "re-",
        "4": "act",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Italic *wre-\nLatin re-der.\nOld French re-bor.\nMiddle English re-\nEnglish re-\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 react"
    }
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    [
      "*wre-",
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    ],
    [
      "re-",
      "re-#Latin"
    ],
    [
      "re-",
      "re-#Old_French"
    ],
    [
      "re-",
      "re-#Middle_English"
    ],
    [
      "re-",
      "re-#English"
    ],
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      "*h₂eǵ-",
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    ],
    [
      "*-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"
    ],
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      "*-tós",
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    ],
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      "*-tos",
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    ],
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      "-tus",
      "-tus#Latin:_past_participle"
    ],
    [
      "āctus",
      "actus#Latin:_made"
    ],
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      "ācta",
      "acta#Latin:_acts"
    ],
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      "act",
      "act#Old_French"
    ],
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      "acte#Middle_English"
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      "act#English"
    ],
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      "re-#English"
    ],
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      "act#English"
    ],
    [
      "redact",
      "redact#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "An emoji used to express a reaction to a post on social media."
      ],
      "tags": [
        "Internet"
      ],
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      "pos": "verb",
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        "To act in response.",
        "To act or perform a second time; to do over again; to reenact.",
        "To return an impulse or impression; to resist the action of another body by an opposite force",
        "To act upon each other; to exercise a reciprocal or a reverse effect, as two or more chemical agents; to act in opposition."
      ],
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  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
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    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 2,
    "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 react →

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-cmVhY3Q