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Yiff was part of a range of onomatopoeic words from a pseudo-language 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 was influenced by yipp (derived from yip), which originally held these sexual connotations.[1][2] By 1992, yiff had been assigned a meaning of a sexual proposition,[3] and in modern use within the furry subculture, yiff exclusively refers either to sex between anthropomorphic animals, or pornographic depictions thereof.




  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)

English Wikipedia has an article on:
  1. (slang, informal) Sex, especially between furries (fictional anthropomorphic animal characters, and/or members of the community surrounding their celebration).
    "FurryMuck yiffs are like real-life yiffs - there is a time and place for everything." — [2]
  2. (slang, informal) Pornography of or involving furries.
    Do you draw yiff?



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

  1. (transitive, intransitive, slang, informal) To have sex, to mate (said of animals, especially foxes, or people dressed up as animals).
    • "He's a furry fan and he's okay,
      He MUCKs all night and he yiffs all day."
    • "Well, according to his sig, he waits until it moves before he yiffs it." — [4]
    • 1997 October 17, StarChaser, “What to genocide”, in rec.games.roguelike.nethack[5] (Usenet), 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[6] (Usenet), 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[7] (Usenet), message-ID <1d3DsMAQZ$J0Ew2R@canismajor.demon.co.uk>:
      Well, i’ve witnessed male foxes queueing up to yiff one of my local vixens… repeatedly!
    • 2012, Joanne Reay, Romeo Spikes:
      I mean, the urge to yiff is a pretty weird thing to admit to. Not something you can just drop into conversation. But look at them, hundreds of them, all gathered together in a Vegas hotel, exchanging information and experiences, the knowledge of their rare urges ever growing.
    • 2017, Joe Strike, Furry Nation: The True Story of America's Most Misunderstood Subculture, →ISBN:
      We can tell them how we never stop yiffing and we met at a Starbucks while wearing our suits.
  2. (transitive and intransitive, slang, informal) To propose cybersex to someone.

Derived terms[edit]



  1. ^ Speck [LittleFox] (2000 December 10) “yiff”, in Everything2, retrieved 30 March 2005
  2. ^ yiff”, in Dictionary.com, 2024 April 17 (last accessed)
  3. ^ Joel K. Fur (1992 December 22) “WHY? (Moorcock, Car Wars etc)”, in rec.games.mud.tiny[1] (Usenet):Foxen [] people have TWISTED your legacy into something... naughty. Remember that Foxish language you went around using, the one with words like "yiff" and "yerf"? If I understand the current Furry thought correctly, "yiff" is now taken to stand for "young innocent furry f***able."

Further reading[edit]


Middle English[edit]

Alternative forms[edit]

Etymology 1[edit]

From Old English ġif.



  1. if
    • c. 1438, John Lydgate, edited by Henry Bergen, Fall of Princes, page 384, line 2020:
      Yiff ther was lak, thou woldest crie & pleyne.
      Remembre theron, and at me nat disdeyne
      If there was lack, you would cry and complain,
      Remember that, and do not me disdain.
    • c. 1438, John Lydgate, edited by Henry Bergen, Fall of Princes, page 339, line 384:
      And yiff that trust with pryncis wil nat tarie,
      Litil merueile thouh the peeple varie []
      And if that trust with princes will not tarry,
      Little marvel though the people vary []
    • 1385-1386, Geoffrey Chaucer, Legend of Good Women, page 154, line 1039:
      So yonge so lusty with hire eyen glade
      That yiff that god that hevene and erthe made
      Wolde haue a love For beaute and goodnesse
      And womanhede and trouthe and semelynesse
      So young and lusty with her eyes glad,
      that if that god that heaven and earth made,
      would have a love for beauty and goodness,
      and womanhood and truth and seemliness

Etymology 2[edit]

From Old English giefan.



  1. Alternative form of yiven
    • 1393, Jean d’Arras, Roman de Melusine, page 154, line 2571:
      So god be pleased, monke shall ye noght be,
      Another ordre to you yiff I shall,
      A knyght will you mak of full hye degre
      As your brethren ben named ryght roiall.
      God willing, a monk you'll not be,
      Another order to you give I shall,
      A knight you'll become of the highest degree,
      Just as your brethren are named rightly royal.