*SET-U

English word origin

Etymology of diet

From Middle English diet, dyet, diete, from Old French diete, from Medieval Latin dieta (“regimen, regulation; assembly”), from Latin diaeta, from Ancient Greek δίαιτα (díaita).

4 source sectionsExtended source reportWiktionary original ↗
In this entry · 4 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

The food and beverage a person or animal consumes. · A controlled regimen of food and drink choices, as to gain or lose weight or otherwise influence health. · Any habitual intake or consumption.

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

From Middle English diet, dyet, diete, from Old French diete, from Medieval Latin dieta (“regimen, regulation; assembly”), from Latin diaeta, from Ancient Greek δίαιτα (díaita).

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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      "dieta#Latin"
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      "lang_code": "ja",
      "word": "ダイエット",
      "raw_tags": [
        "borrowed"
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        "Any habitual intake or consumption."
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Source etymology 1 · variant 2/2

Original entry ↗
adj

Containing less fat, salt, sugar, or calories than normal, or claimed to have such. · Having certain traits subtracted.

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

From Middle English diet, dyet, diete, from Old French diete, from Medieval Latin dieta (“regimen, regulation; assembly”), from Latin diaeta, from Ancient Greek δίαιτα (díaita).

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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    },
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    ],
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        "Having certain traits subtracted."
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Source etymology 2

Original entry ↗
verb

To modify one's food and beverage intake so as to decrease or increase body weight or influence health. · To regulate the food of (someone); to put on a diet. · To eat; to take one's meals. · To cause to take food; to feed.

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

From Middle English dieten, dyeten, diȝeten, from Old French dïeter and Medieval Latin diētāre.

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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    },
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    },
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      "diȝeten#Middle_English"
    ],
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      "dïeter#Old_French"
    ],
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      "diētāre",
      "dietare#Latin"
    ]
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        "To cause to take food; to feed."
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Source etymology 3

Original entry ↗
noun

A council or assembly of leaders; a formal deliberative assembly. · A session of exams. · A criminal proceeding in court. · A clerical or ecclesiastical function in Scotland.

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

From Middle English diet, dyet, from Old French diete, from Medieval Latin diēta, diaeta (“a public assembly; set day of trial; a day's journey”), from Ancient Greek δῐ́αιτα (dĭ́aita, “way of living, living space; decision, judgement”), influenced by Latin diēs (“day”).

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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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 diet →

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-ZGlldA