Define Yiff Meaning

1) (noun) Sound supposedly made by mating arctic foxes.
2) (acronym) (or more backronym) YIFF or Y. I. F. F. - "Young Incredibly Fuckable Furry"
3) (proper name) YIFF sound server. Program for Linux to help handle audio.
4) (noun) More or less (usually more) sexual act. Commonly used by furries, usually denotes standard intercourse but may denote any kind of sexual behaviour between any type and number of parties (imaginary anthro creatures, humans, animals, even inanimate objects like plushies). Antonym: Yerf.
5) (verb) Like in meaning 4, "to yiff".
6) Furry (or otherwise) artwork depicting yiff as in meaning 4.
7) Expression of joy (by furries)
8) Non-invasive question about sexual feelings/will to mate.

Note in all sexual meanings this has a very specific emotional background: It's neither considered vulgar (like "fuck" or technical (like "have intercourse") or emotion-less (like "make love"). It's playful, considering the act like something fun, nice, pleasant and not very important - without any special obligations attached to it. "Let's yiff" has about the same emotional background as "Let's play".

See also yiffy

1. A happy affirmation in an imaginary fox language, invented by the writer of the Fuzzball MUCK server. The definition was confused with the definition for another word in the same imaginary language, 'yipp', and an administrator of another MUCK heavily promoted 'yiff' word in its first known sexual connotation in 1995 or later. It was only after this point that supposed origins concerning mating sounds and acronyms were invented.

2. Meant to imply feelings of sexual arousal or intent to arouse; also refers to a sexual act. Considered crass language in polite circles.

Yiff is the hottest type of porn because it is furries having sex

It stands for, Yucky Idiotic Furry Fuckers. Y.I.F.F.

a form of pornography of the furry nature
in which one or more anthropomorphic
animal character(s) is doing something
sexually to another anthropomorphic animal
furry. there are sites such as furaffinity.net
and yiffstar.com where there is a large
selection of yiff(y) stories and pics done
profesionally and amature arts.

Drawn porn featuring furry characters. Extremely repulsive and disturbing to some, exciting and alluring to others. Animalistic traits refined by evolution serve to compliment conventional human sexiness (expressed in body shapes, facial expressions, situational context and etc.) resulting in wild variety of lustful self-expression. All genders, sexualities, fetishes and species are present, once you're hooked you'll have a lot to choose from.
Being attracted to yiff typically doesn't mean being a zoophile since most of such art features humanlike bodies and stylized muzzles expressing human emotions. That said, there's also such thing as feral yiff.
Lots of people make money drawing yiff comissions but there are also a lot of artists creating such art just for the sake of it. Measuring the sheer volume of yiff content produced daily is currently impossible.

Internet intercourse between two or more furries.

verb: to have netsex while pretending to be animals or furries (anthropomorphic animals), frequently practised in the furry fandom

noun: 1. a session of said netsex, 2. pornography featuring furries

adjective (yiffy): sexy or horny, in a furry context

Term used by furfaggots to denote any form of sex, sexuality or anything of that sort. It usually involves an animal and is about the most fucked up thing on the planet.

v.

1.) Furry code word for "violently rape." Usually used in reference to the anal ("tailhole") orifice of a male animal they intend to penetrate with their sad excuse for a penis.
2.) To dress up in a fursuit, find another furry dressed likewise, and hump them while in the fursuit. Sole form of furry sexual gratification not involving the need to "paw off".