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Particularly: “We need quality sources for these claims.”

Yiff is part of a range of onomatopoeic words that form a pseudo-language used by the furry role-playing community: yiff, yip, yerf, yaff, yarf, growf, and growlf (in order from most positive connotations to most negative connotations). Yiff meant yes or an exuberant hello!. Later, yiff was assigned a meaning of a sexual proposition, a meaning that had previously been assigned to yipp (a coarse form of yip).




  1. (onomatopoeic, apocryphal) Representing the bark of a fox (especially while mating).
  2. (of a person, informal) To express happiness, to state that something is sexy.


yiff ‎(usually uncountable, plural yiffs)

  1. (informal) A bark.
  2. (slang, informal) The act of yiffing.
    • 1996 July 14, j.serdy, “RFC: A Beginner’s Guide to TinySex on the FurryMuck”, in alt.fan.furry, Usenet[1], message-ID <4sbqit$cap@netaxs.com>:
      Of course the inverse is possible with all these possibilities, and you can be having a yiff with a partner in the room with you and be having a pleasant non-sexual conversation with another remote player through a page-conversation.
  3. (slang, informal) Pornography of furries (fictional anthropomorphic animal characters).
    Do you draw yiff?



yiff ‎(third-person singular simple present yiffs, present participle yiffing, simple past and past participle yiffed)

  1. (intransitive, apocryphal) To bark (said of foxes).
  2. (intransitive, of a person, apocryphal) To bark like a fox (especially in a sexual way).
  3. (transitive and intransitive, slang, informal) To have sex, to mate (said of animals, especially foxes).
    • 1997 October 17, StarChaser, “What to genocide”, in rec.games.roguelike.nethack, Usenet[2], message-ID <3448af39.75668367@>:
      Monsters snicker at me, succubi refuse to be seen with me, my dog tries to yiff my leg, shopkeepers say ‘No shirt, no shoes, no service’.
    • 1997 September 22, Locandez, “Hypothetical Question #3: acting natural”, in alt.lifestyle.furry, Usenet[3], message-ID <na.dab87347cd.a40040lyndale@argonet.co.uk>:
      And even if foxes are allowed to yiff more than once, I’d still have to wait for the vixen to come into heat.
    • 1997 September 23, MegaDog the Nettweiler, “Hypothetical Question #3: acting natural”, in alt.lifestyle.furry, Usenet[4], message-ID <1d3DsMAQZ$J0Ew2R@canismajor.demon.co.uk>:
      Well, i’ve witnessed male foxes queueing up to yiff one of my local vixens… repeatedly!
  4. (transitive and intransitive, slang, informal) To propose cybersex.

Derived terms[edit]




Middle English[edit]

Etymology 1[edit]

From Old English ġif.



  1. if
    • (Can we date this quote?) John Lydgate Fall of Princes:
      Yiff ther was lak, thou woldest crie & pleyne.
    • (Can we date this quote?) John Lydgate Fall of Princes:
      And yiff that trust with pryncis wil nat tarie,
      Litil merueile thouh the peeple varie []
    • (Can we date this quote?) Geoffrey Chaucer:
      [] That yiff that god that hevene and erthe made
      Wolde haue a love For beaute and goodness
      And womanhede and trouthe and semelynesse […]

Etymology 2[edit]

From Old English giefan.



  1. Alternative form of yiven
    • 1393, Jean d’Arras Roman de Melusine:
      Another ordre to you yiff I shall,
      A knyght will you mak of full hye degre
      As your brethren ben named ryght roiall.