*SET-U

English word origin

Etymology of yiff

Yiff was part of a range of onomatopoeic words from a pseudolanguage called Foxish used by the furry role-playing community, ostensibly created by a user named LittleFox or Foxen around 1990. Other terms used by this com

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

The bark of a fox. · Sexual intercourse, especially between furries (fictional anthropomorphic animal characters or members of the community surrounding their celebration). · Pornography of or involving furries.

verb

To bark as or similar to a fox. · Of animals, especially foxes, to mate · Of furries, To have sexual intercourse. · To propose cybersex to someone.

intj

Onomatopeia representing the bark of a fox (especially while mating). · Used to express happiness or to state that something is sexually appealing.

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

Yiff was part of a range of onomatopoeic words from a pseudolanguage called Foxish used by the furry role-playing community, ostensibly created by a user named LittleFox or Foxen around 1990. Other terms used by this community included yip, yerf, yaff, yarf, growf, and growlf. Yiff originally meant yes or an exuberant hello. According to LittleFox, the sexual connotations of yiff were influenced by yipp (derived from yip), which originally held these sexual connotations. By 1992, yiff had been assigned a meaning of a sexual proposition, and in modern use within the furry subculture, yiff exclusively refers either to sex between anthropomorphic animals, or pornographic depictions thereof.

Inspect preserved source fields

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

{
  "templates": [
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "id": "Q3318957",
        "exnihilo": "1"
      },
      "expansion": ""
    },
    {
      "name": ",",
      "args": {},
      "expansion": ","
    },
    {
      "name": "etymon",
      "args": {
        "1": "en",
        "id": "Q3318957",
        "exnihilo": "1"
      },
      "expansion": ""
    }
  ],
  "links": [
    [
      "onomatopoeic",
      "onomatopoeic"
    ],
    [
      "pseudolanguage",
      "pseudolanguage"
    ],
    [
      "furry",
      "furry"
    ],
    [
      "role-play",
      "role-play"
    ],
    [
      "yip",
      "yip#English"
    ],
    [
      "yerf",
      "yerf#English"
    ],
    [
      "yaff",
      "yaff#English"
    ],
    [
      "yarf",
      "yarf#English"
    ],
    [
      "growf",
      "growf#English"
    ],
    [
      "growlf",
      "growlf#English"
    ],
    [
      "yes",
      "yes#English"
    ],
    [
      "exuberant",
      "exuberant"
    ],
    [
      "hello",
      "hello#English"
    ],
    [
      "yipp",
      "yipp#English"
    ],
    [
      "sexual",
      "sexual"
    ],
    [
      "proposition",
      "proposition"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "noun",
      "glosses": [
        "The bark of a fox.",
        "Sexual intercourse, especially between furries (fictional anthropomorphic animal characters or members of the community surrounding their celebration).",
        "Pornography of or involving furries."
      ],
      "tags": [
        "informal",
        "slang",
        "uncountable",
        "usually",
        "vulgar"
      ],
      "recordId": "5c758f57b123f8234a4d92a02a33720ae330cd82f3f687341369adc1b25f453a",
      "rawRecordSha256": "e9ecb7684d8f1aae67d218d1fce71f53205166d69b33320d9f4a44a0538c8f59",
      "sourceRecordOrdinal": 281936
    },
    {
      "pos": "verb",
      "glosses": [
        "To bark as or similar to a fox.",
        "Of animals, especially foxes, to mate",
        "Of furries, To have sexual intercourse.",
        "To propose cybersex to someone."
      ],
      "tags": [
        "informal",
        "intransitive",
        "slang",
        "ambitransitive",
        "rare",
        "vulgar",
        "transitive"
      ],
      "recordId": "76a66f36e35ad89cf2976de6c1be5e53d37c6fb2e369a232194be34fcc5d4ae8",
      "rawRecordSha256": "1972c11793998a0cbd577f564a1c8d1602a64284978e60637e0c43162560f94c",
      "sourceRecordOrdinal": 281937
    },
    {
      "pos": "intj",
      "glosses": [
        "Onomatopeia representing the bark of a fox (especially while mating).",
        "Used to express happiness or to state that something is sexually appealing."
      ],
      "tags": [
        "informal"
      ],
      "recordId": "9c7fae7ece5b769739bf974ff94f7332c5eb268cc47b487e53880ef942a9ea30",
      "rawRecordSha256": "13901164769d703851cc3ca80a1989e1c3190ac204425e2bb256c47184309e6d",
      "sourceRecordOrdinal": 281935
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 0,
    "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 yiff →

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-eWlmZg