*SET-U

English word origin

Etymology of fever

From Middle English fever, fevere, from Old English fefer, fefor (“fever”) and Old French fievre (“fever”), from Latin febris (“a fever”), from Proto-Indo-European *dʰegʷʰ- (“to burn”). Displaced native Old English hriþ

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

Original entry ↗
noun

A higher than normal body temperature of a person (or, generally, a mammal), usually caused by disease. · Any of various diseases. · A state of excitement or anxiety. · A group of stingrays.

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

From Middle English fever, fevere, from Old English fefer, fefor (“fever”) and Old French fievre (“fever”), from Latin febris (“a fever”), from Proto-Indo-European *dʰegʷʰ- (“to burn”). Displaced native Old English hriþ (“fever”). Compare also Saterland Frisian Fiewer, German Fieber, Danish feber, Swedish feber.

Relationships mentioned by the source

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

This page abbreviates 1 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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        "3": "*dʰegʷʰ-"
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      "expansion": "Middle English fever"
    },
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    },
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        "4": "",
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      },
      "expansion": "Latin febris (“a fever”)"
    },
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        "3": "*dʰegʷʰ-",
        "4": "",
        "5": "to burn"
      },
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    },
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        "3": "",
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    },
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        "2": "Fiewer"
      },
      "expansion": "Saterland Frisian Fiewer"
    },
    {
      "name": "cog",
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        "2": "Fieber"
      },
      "expansion": "German Fieber"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "feber"
      },
      "expansion": "Danish feber"
    },
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      "name": "cog",
      "args": {
        "1": "sv",
        "2": "feber"
      },
      "expansion": "Swedish feber"
    },
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      "fefer#Old_English"
    ],
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      "fefor#Old_English"
    ],
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      "fievre#Old_French"
    ],
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      "febris",
      "febris#Latin"
    ],
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    ],
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      "hriþ#Old_English"
    ],
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      "Fiewer",
      "Fiewer#Saterland_Frisian"
    ],
    [
      "Fieber",
      "Fieber#German"
    ],
    [
      "feber",
      "feber#Danish"
    ],
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      "feber",
      "feber#Swedish"
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        "A group of stingrays."
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}

Unnumbered source etymology · variant 2/2

Original entry ↗
verb

To put into a fever; to affect with fever. · To become fevered.

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

From Middle English fever, fevere, from Old English fefer, fefor (“fever”) and Old French fievre (“fever”), from Latin febris (“a fever”), from Proto-Indo-European *dʰegʷʰ- (“to burn”). Displaced native Old English hriþ (“fever”). Compare also Saterland Frisian Fiewer, German Fieber, Danish feber, Swedish feber.

Relationships mentioned by the source

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

Inspect preserved source fields

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

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        "4": "",
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      },
      "expansion": "Old French fievre (“fever”)"
    },
    {
      "name": "der",
      "args": {
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        "4": "",
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      },
      "expansion": "Latin febris (“a fever”)"
    },
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        "5": "to burn"
      },
      "expansion": "Proto-Indo-European *dʰegʷʰ- (“to burn”)"
    },
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    },
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      },
      "expansion": "Saterland Frisian Fiewer"
    },
    {
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      "expansion": "German Fieber"
    },
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      "name": "cog",
      "args": {
        "1": "da",
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      },
      "expansion": "Danish feber"
    },
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      "name": "cog",
      "args": {
        "1": "sv",
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      },
      "expansion": "Swedish feber"
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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 fever →

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-ZmV2ZXI