*SET-U

English word origin

Etymology of sick

Etymology tree Proto-Germanic *seukaną Proto-Germanic *seukaz Proto-West Germanic *seuk Old English sēoc Old English sēc Middle English sik English sick From Middle English sik, sike, seek, seke, seok, from Old English s

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 ↗
adj

In poor health; ill. · [with with] Afflicted by (a specific condition, usually medical). · Having an urge to vomit. · Mentally unstable, disturbed.

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

Etymology tree Proto-Germanic *seukaną Proto-Germanic *seukaz Proto-West Germanic *seuk Old English sēoc Old English sēc Middle English sik English sick From Middle English sik, sike, seek, seke, seok, from Old English sēoc (“sick, ill”), from Proto-West Germanic *seuk, from Proto-Germanic *seukaz, from Proto-Indo-European *sewg- (“to be troubled or grieved”). See also West Frisian siik, Dutch ziek, German siech, Norwegian Bokmål syk, Norwegian Nynorsk and Swedish sjuk, Danish syg; also Middle Irish socht (“silence, depression”), Old Armenian հիւծանիմ (hiwcanim, “to be weakening”). The "very good, excellent" sense is an ameliorative semantic shift from the original sense of "in poor health". Compare similar semantic development in terrific and wicked.

Relationships mentioned by the source

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

  • Inherited-form mentionsikenm
  • Inherited-form mentionsēocang · sick, ill
  • Inherited-form mention*seukgmw-pro
  • Inherited-form mention*seukazgem-pro
  • Derivation mention*sewg-ine-pro · to be troubled or grieved
  • Cognate mentionsiikfy
  • Cognate mentionzieknl
  • Cognate mentionsiechde
  • Cognate mentionsyknb
  • Cognate mentionsygda
  • Cognate mentionsochtmga · silence, depression
  • Cognate mentionհիւծանիմxcl · to be weakening

This page abbreviates 5 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.

{
  "templates": [
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:sik",
        "id": "ill",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Germanic *seukaną\nProto-Germanic *seukaz\nProto-West Germanic *seuk\nOld English sēoc\nOld English sēc\nMiddle English sik\nEnglish sick\n[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*seuk\", \"status\" : \"ok\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Old English\", \"term\" : \"sēoc\", \"status\" : \"ok\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Old English\", \"term\" : \"sēc\", \"status\" : \"ok\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"sik\", \"status\" : \"ok\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"sick\", \"lang\" : \"en\" }\" data-id=\"ill\" data-lang=\"en\" data-title=\"sick\" id=\"English:_ill\">"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "sik"
      },
      "expansion": "Middle English sik"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "sēoc",
        "t": "sick, ill"
      },
      "expansion": "Old English sēoc (“sick, ill”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*seuk"
      },
      "expansion": "Proto-West Germanic *seuk"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*seukaz"
      },
      "expansion": "Proto-Germanic *seukaz"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*sewg-",
        "t": "to be troubled or grieved"
      },
      "expansion": "Proto-Indo-European *sewg- (“to be troubled or grieved”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fy",
        "2": "siik"
      },
      "expansion": "West Frisian siik"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "ziek"
      },
      "expansion": "Dutch ziek"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "siech"
      },
      "expansion": "German siech"
    },
    {
      "name": "cog",
      "args": {
        "1": "nb",
        "2": "syk"
      },
      "expansion": "Norwegian Bokmål syk"
    },
    {
      "name": "cog",
      "args": {
        "1": "nn,sv",
        "2": "sjuk"
      },
      "expansion": "Norwegian Nynorsk and Swedish sjuk"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "syg"
      },
      "expansion": "Danish syg"
    },
    {
      "name": "cog",
      "args": {
        "1": "mga",
        "2": "socht",
        "t": "silence, depression"
      },
      "expansion": "Middle Irish socht (“silence, depression”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "xcl",
        "2": "հիւծանիմ",
        "t": "to be weakening"
      },
      "expansion": "Old Armenian հիւծանիմ (hiwcanim, “to be weakening”)"
    },
    {
      "name": "ss",
      "args": {
        "1": "en",
        "type": "a"
      },
      "expansion": "ameliorative semantic shift"
    },
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:sik",
        "id": "ill",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Germanic *seukaną\nProto-Germanic *seukaz\nProto-West Germanic *seuk\nOld English sēoc\nOld English sēc\nMiddle English sik\nEnglish sick"
    }
  ],
  "links": [
    [
      "*seukaną",
      "Reconstruction:Proto-Germanic/seukaną"
    ],
    [
      "*seukaz",
      "Reconstruction:Proto-Germanic/seukaz"
    ],
    [
      "*seuk",
      "Reconstruction:Proto-West Germanic/seuk"
    ],
    [
      "sēoc",
      "seoc#Old_English"
    ],
    [
      "sēc",
      "sec#Old_English"
    ],
    [
      "sik",
      "sik#Middle_English"
    ],
    [
      "sik",
      "sik#Middle_English"
    ],
    [
      "sike",
      "sike#Middle_English"
    ],
    [
      "seek",
      "seek#Middle_English"
    ],
    [
      "seke",
      "seke#Middle_English"
    ],
    [
      "seok",
      "seok#Middle_English"
    ],
    [
      "sēoc",
      "seoc#Old_English"
    ],
    [
      "*seuk",
      "Reconstruction:Proto-West Germanic/seuk"
    ],
    [
      "*seukaz",
      "Reconstruction:Proto-Germanic/seukaz"
    ],
    [
      "*sewg-",
      "Reconstruction:Proto-Indo-European/sewg-"
    ],
    [
      "siik",
      "siik#West_Frisian"
    ],
    [
      "ziek",
      "ziek#Dutch"
    ],
    [
      "siech",
      "siech#German"
    ],
    [
      "syk",
      "syk#Norwegian_Bokmål"
    ],
    [
      "Norwegian Nynorsk",
      "sjuk#Norwegian_Nynorsk"
    ],
    [
      "sjuk",
      "sjuk#Swedish"
    ],
    [
      "syg",
      "syg#Danish"
    ],
    [
      "socht",
      "socht#Middle_Irish"
    ],
    [
      "հիւծանիմ",
      "հիւծանիմ#Old_Armenian"
    ],
    [
      "terrific",
      "terrific#English"
    ],
    [
      "wicked",
      "wicked#English"
    ]
  ],
  "references": [],
  "descendants": [
    {
      "lang": "Bislama",
      "lang_code": "bi",
      "word": "sik"
    },
    {
      "lang": "Pijin",
      "lang_code": "pis",
      "word": "siki"
    },
    {
      "lang": "Pijin",
      "lang_code": "pis",
      "word": "sik"
    },
    {
      "lang": "Tok Pisin",
      "lang_code": "tpi",
      "word": "sik"
    },
    {
      "lang": "Dutch",
      "lang_code": "nl",
      "word": "sick",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Navajo",
      "lang_code": "nv",
      "word": "sxih",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Tamil",
      "lang_code": "ta",
      "word": "சீக்கு",
      "raw_tags": [
        "borrowed"
      ],
      "roman": "cīkku"
    }
  ],
  "lexical": [
    {
      "pos": "adj",
      "glosses": [
        "In poor health; ill.",
        "[with with] Afflicted by (a specific condition, usually medical).",
        "Having an urge to vomit.",
        "Mentally unstable, disturbed."
      ],
      "tags": [
        "colloquial"
      ],
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  "omittedAuxiliaryFields": {
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}

Source etymology 1 · variant 2/2

Original entry ↗
verb

To vomit. · To fall sick; to sicken.

noun

Vomit. · (especially in the phrases on the sick and on long-term sick) Any of various current or former benefits or allowances paid by the Government to support the sick, disabled or incapacitated.

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

Etymology tree Proto-Germanic *seukaną Proto-Germanic *seukaz Proto-West Germanic *seuk Old English sēoc Old English sēc Middle English sik English sick From Middle English sik, sike, seek, seke, seok, from Old English sēoc (“sick, ill”), from Proto-West Germanic *seuk, from Proto-Germanic *seukaz, from Proto-Indo-European *sewg- (“to be troubled or grieved”). See also West Frisian siik, Dutch ziek, German siech, Norwegian Bokmål syk, Norwegian Nynorsk and Swedish sjuk, Danish syg; also Middle Irish socht (“silence, depression”), Old Armenian հիւծանիմ (hiwcanim, “to be weakening”). The "very good, excellent" sense is an ameliorative semantic shift from the original sense of "in poor health". Compare similar semantic development in terrific and wicked.

Relationships mentioned by the source

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

  • Inherited-form mentionsikenm
  • Inherited-form mentionsēocang · sick, ill
  • Inherited-form mention*seukgmw-pro
  • Inherited-form mention*seukazgem-pro
  • Derivation mention*sewg-ine-pro · to be troubled or grieved
  • Cognate mentionsiikfy
  • Cognate mentionzieknl
  • Cognate mentionsiechde
  • Cognate mentionsyknb
  • Cognate mentionsygda
  • Cognate mentionsochtmga · silence, depression
  • Cognate mentionհիւծանիմxcl · to be weakening
Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:sik",
        "id": "ill",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Germanic *seukaną\nProto-Germanic *seukaz\nProto-West Germanic *seuk\nOld English sēoc\nOld English sēc\nMiddle English sik\nEnglish sick\n[Appendix:Glossary#inherited|Inherited]] from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Proto-West Germanic\", \"term\" : \"*seuk\", \"status\" : \"ok\", \"lang\" : \"gmw-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Old English\", \"term\" : \"sēoc\", \"status\" : \"ok\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Old English\", \"term\" : \"sēc\", \"status\" : \"ok\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"sik\", \"status\" : \"ok\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"sick\", \"lang\" : \"en\" }\" data-id=\"ill\" data-lang=\"en\" data-title=\"sick\" id=\"English:_ill\">"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "sik"
      },
      "expansion": "Middle English sik"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "sēoc",
        "t": "sick, ill"
      },
      "expansion": "Old English sēoc (“sick, ill”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*seuk"
      },
      "expansion": "Proto-West Germanic *seuk"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*seukaz"
      },
      "expansion": "Proto-Germanic *seukaz"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*sewg-",
        "t": "to be troubled or grieved"
      },
      "expansion": "Proto-Indo-European *sewg- (“to be troubled or grieved”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "fy",
        "2": "siik"
      },
      "expansion": "West Frisian siik"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "ziek"
      },
      "expansion": "Dutch ziek"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "siech"
      },
      "expansion": "German siech"
    },
    {
      "name": "cog",
      "args": {
        "1": "nb",
        "2": "syk"
      },
      "expansion": "Norwegian Bokmål syk"
    },
    {
      "name": "cog",
      "args": {
        "1": "nn,sv",
        "2": "sjuk"
      },
      "expansion": "Norwegian Nynorsk and Swedish sjuk"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "syg"
      },
      "expansion": "Danish syg"
    },
    {
      "name": "cog",
      "args": {
        "1": "mga",
        "2": "socht",
        "t": "silence, depression"
      },
      "expansion": "Middle Irish socht (“silence, depression”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "xcl",
        "2": "հիւծանիմ",
        "t": "to be weakening"
      },
      "expansion": "Old Armenian հիւծանիմ (hiwcanim, “to be weakening”)"
    },
    {
      "name": "ss",
      "args": {
        "1": "en",
        "type": "a"
      },
      "expansion": "ameliorative semantic shift"
    },
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:sik",
        "id": "ill",
        "tree": "1"
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      "expansion": "Etymology tree\nProto-Germanic *seukaną\nProto-Germanic *seukaz\nProto-West Germanic *seuk\nOld English sēoc\nOld English sēc\nMiddle English sik\nEnglish sick"
    }
  ],
  "links": [
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      "Reconstruction:Proto-Germanic/seukaną"
    ],
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      "Reconstruction:Proto-Germanic/seukaz"
    ],
    [
      "*seuk",
      "Reconstruction:Proto-West Germanic/seuk"
    ],
    [
      "sēoc",
      "seoc#Old_English"
    ],
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      "sēc",
      "sec#Old_English"
    ],
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      "sik",
      "sik#Middle_English"
    ],
    [
      "sik",
      "sik#Middle_English"
    ],
    [
      "sike",
      "sike#Middle_English"
    ],
    [
      "seek",
      "seek#Middle_English"
    ],
    [
      "seke",
      "seke#Middle_English"
    ],
    [
      "seok",
      "seok#Middle_English"
    ],
    [
      "sēoc",
      "seoc#Old_English"
    ],
    [
      "*seuk",
      "Reconstruction:Proto-West Germanic/seuk"
    ],
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      "*seukaz",
      "Reconstruction:Proto-Germanic/seukaz"
    ],
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      "*sewg-",
      "Reconstruction:Proto-Indo-European/sewg-"
    ],
    [
      "siik",
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    ],
    [
      "ziek",
      "ziek#Dutch"
    ],
    [
      "siech",
      "siech#German"
    ],
    [
      "syk",
      "syk#Norwegian_Bokmål"
    ],
    [
      "Norwegian Nynorsk",
      "sjuk#Norwegian_Nynorsk"
    ],
    [
      "sjuk",
      "sjuk#Swedish"
    ],
    [
      "syg",
      "syg#Danish"
    ],
    [
      "socht",
      "socht#Middle_Irish"
    ],
    [
      "հիւծանիմ",
      "հիւծանիմ#Old_Armenian"
    ],
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      "terrific",
      "terrific#English"
    ],
    [
      "wicked",
      "wicked#English"
    ]
  ],
  "references": [],
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  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To vomit.",
        "To fall sick; to sicken."
      ],
      "tags": [
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        "UK",
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      "pos": "noun",
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        "Vomit.",
        "(especially in the phrases on the sick and on long-term sick) Any of various current or former benefits or allowances paid by the Government to support the sick, disabled or incapacitated."
      ],
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        "UK",
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Source etymology 2

Original entry ↗
verb

Alternative spelling of sic (“set upon”).

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

Etymology tree English seek English sic English sick Variant of sic, itself an alteration of seek.

Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":from",
        "3": "sic<id:seek>",
        "id": "set upon",
        "tree": "1"
      },
      "expansion": "Etymology tree\nEnglish seek\nEnglish sic\nEnglish sick"
    },
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":from",
        "3": "sic<id:seek>",
        "id": "set upon",
        "tree": "1"
      },
      "expansion": "Etymology tree\nEnglish seek\nEnglish sic\nEnglish sick"
    }
  ],
  "links": [
    [
      "seek",
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    ],
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    ],
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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 sick →

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-c2ljaw