*SET-U

English word origin

Etymology of side

Etymology tree Proto-Indo-European *seh₁-der. Proto-Germanic *sīdaz Proto-Germanic *sīdǭ Old English sīde Middle English side English side From Middle English side, from Old English sīde (“side, flank”), from Proto-Germa

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.

Source etymology 1

Original entry ↗
adj

Being on the left or right, or toward the left or right; lateral. · Indirect; oblique; incidental.

noun

A bounding straight edge of a two-dimensional shape. · A flat surface of a three-dimensional object; a face. · One half (left or right, top or bottom, front or back, etc.) of something or someone. · A region in a specified position with respect to something.

verb

To ally oneself, be in an alliance, usually with "with" or rarely "in with" · To lean on one side. · To be or stand at the side of; to be on the side toward. · To suit; to pair; to match.

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

Etymology tree Proto-Indo-European *seh₁-der. Proto-Germanic *sīdaz Proto-Germanic *sīdǭ Old English sīde Middle English side English side From Middle English side, from Old English sīde (“side, flank”), from Proto-Germanic *sīdǭ (“side, flank, edge, shore”), derived from *sīdaz, probably from Proto-Indo-European *seh₁- (“long, lasting”). Cognate with Saterland Frisian Siede (“side”), West Frisian side (“side”), Dutch zijde, zij (“side”), German Low German Sied (“side”), German Seite (“side”), Danish, Norwegian Bokmål, and Norwegian Nynorsk side (“side”), Swedish sida (“side”). The LGBTQ slang sense was coined by sex therapist and author Joe Kort in 2010 and popularized in 2013. The sense was coined by analogy with top and bottom and based on the metaphor of a box which has a top, bottom, and sides.

Relationships mentioned by the source

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

  • Inherited-form mentionsideenm
  • Inherited-form mentionsīdeang · side, flank
  • Inherited-form mention*sīdǭgem-pro · side, flank, edge, shore
  • Derivation mention*seh₁-ine-pro · long, lasting
  • Cognate mentionSiedestq · side
  • Cognate mentionsidefy · side
  • Cognate mentionzijdenl
  • Cognate mentionSeitede · side
  • Cognate mentionsidasv · side

This page abbreviates 20 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": "etymon",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:side",
        "id": "edge",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *seh₁-der.\nProto-Germanic *sīdaz\nProto-Germanic *sīdǭ\nOld English sīde\nMiddle English side\nEnglish side\n[Appendix:Glossary#derived_terms|Derived]] from\", \"terms\" : [ { \"id\" : \"long\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*seh₁-\", \"lang\" : \"ine-pro\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*sīdaz\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"From\", \"keyword\" : \"from\" } ], \"lang_name\" : \"Proto-Germanic\", \"term\" : \"*sīdǭ\", \"status\" : \"ok\", \"lang\" : \"gem-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"Old English\", \"term\" : \"sīde\", \"lang\" : \"ang\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"side\", \"status\" : \"ok\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"status\" : \"ok\", \"lang_name\" : \"English\", \"term\" : \"side\", \"lang\" : \"en\" }\" data-id=\"edge\" data-lang=\"en\" data-title=\"side\" id=\"English:_edge\">"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "side"
      },
      "expansion": "Middle English side"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "sīde",
        "t": "side, flank"
      },
      "expansion": "Old English sīde (“side, flank”)"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*sīdǭ",
        "t": "side, flank, edge, shore"
      },
      "expansion": "Proto-Germanic *sīdǭ (“side, flank, edge, shore”)"
    },
    {
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      "args": {
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    },
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      "name": "cog",
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        "1": "stq",
        "2": "Siede",
        "t": "side"
      },
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    },
    {
      "name": "cog",
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        "1": "fy",
        "2": "side",
        "t": "side"
      },
      "expansion": "West Frisian side (“side”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "zijde"
      },
      "expansion": "Dutch zijde"
    },
    {
      "name": "cog",
      "args": {
        "1": "nds-de",
        "2": "Sied",
        "t": "side"
      },
      "expansion": "German Low German Sied (“side”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Seite",
        "t": "side"
      },
      "expansion": "German Seite (“side”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "da,nb,nn",
        "2": "side",
        "t": "side"
      },
      "expansion": "Danish, Norwegian Bokmål, and Norwegian Nynorsk side (“side”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sv",
        "2": "sida",
        "t": "side"
      },
      "expansion": "Swedish sida (“side”)"
    },
    {
      "name": "coinage",
      "args": {
        "1": "en",
        "2": "Joe Kort",
        "in": "2010",
        "occ": "sex therapist",
        "occ2": "author",
        "nocap": "1",
        "nobycat": "1"
      },
      "expansion": "coined by sex therapist and author Joe Kort in 2010"
    },
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    }
  ],
  "links": [
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      "Reconstruction:Proto-Indo-European/seh₁-#Proto-Indo-European:_long"
    ],
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      "*sīdaz",
      "Reconstruction:Proto-Germanic/sīdaz"
    ],
    [
      "*sīdǭ",
      "Reconstruction:Proto-Germanic/sīdǭ"
    ],
    [
      "sīde",
      "side#Old_English:_edge"
    ],
    [
      "side",
      "side#Middle_English"
    ],
    [
      "side",
      "side#Middle_English"
    ],
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      "sīde",
      "side#Old_English"
    ],
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      "Reconstruction:Proto-Germanic/sīdǭ"
    ],
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    ],
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      "Reconstruction:Proto-Indo-European/seh₁-"
    ],
    [
      "Siede",
      "Siede#Saterland_Frisian"
    ],
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      "side",
      "side#West_Frisian"
    ],
    [
      "zijde",
      "zijde#Dutch"
    ],
    [
      "zij",
      "zij#Dutch"
    ],
    [
      "Sied",
      "Sied#Low_German"
    ],
    [
      "Seite",
      "Seite#German"
    ],
    [
      "Danish",
      "side#Danish"
    ],
    [
      "Norwegian Bokmål",
      "side#Norwegian_Bokmål"
    ],
    [
      "side",
      "side#Norwegian_Nynorsk"
    ],
    [
      "sida",
      "sida#Swedish"
    ],
    [
      "top",
      "top#English"
    ],
    [
      "bottom",
      "bottom#English"
    ]
  ],
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  "descendants": [],
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        "Being on the left or right, or toward the left or right; lateral.",
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        "One half (left or right, top or bottom, front or back, etc.) of something or someone.",
        "A region in a specified position with respect to something."
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        "To suit; to pair; to match."
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Source etymology 2

Original entry ↗
adv

Widely; wide; far.

verb

To clear, tidy or sort.

adj

Wide; large; long, pendulous, hanging low, trailing; far-reaching. · Far; distant.

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

From Middle English side, syde, syd, from Old English sīd (“wide, broad, spacious, ample, extensive, vast, far-reaching”), from Proto-West Germanic *sīd, from Proto-Germanic *sīdaz (“drooping, hanging, low, excessive, extra”), from Proto-Indo-European *sēy- (“to send, throw, drop, sow, deposit”). Cognate with obsolete Dutch zijd (“wide, vast”), Low German sied (“low”), Swedish sid (“long, hanging down”), Icelandic síður (“low hanging, long”).

Relationships mentioned by the source

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

  • Inherited-form mentionsideenm
  • Inherited-form mentionsīdang · wide, broad, spacious, ample, extensive, vast, far-reaching
  • Inherited-form mention*sīdgmw-pro
  • Inherited-form mention*sīdazgem-pro · drooping, hanging, low, excessive, extra
  • Derivation mention*sēy-ine-pro · to send, throw, drop, sow, deposit
  • Cognate mentionzijdnl · wide, vast
  • Cognate mentionsiednds · low
  • Cognate mentionsidsv · long, hanging down
  • Cognate mentionsíðuris · low hanging, long
Inspect preserved source fields

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

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      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "side"
      },
      "expansion": "Middle English side"
    },
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        "2": "ang",
        "3": "sīd",
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    },
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      "args": {
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        "2": "zijd",
        "t": "wide, vast"
      },
      "expansion": "Dutch zijd (“wide, vast”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "nds",
        "2": "sied",
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      },
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      "args": {
        "1": "sv",
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        "t": "long, hanging down"
      },
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    },
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      "name": "cog",
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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 side →

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-c2lkZQ