Yiffy 

Sexy, particularly as relates to sex with anthropomorphised animals, cartoon animals, or sentient animals, any of which may be known as a furry. From yiff.

That vixen is yiffy.

Yiffy by Benfold February 20, 2003

Yiffy 

(in furry fandom)
adj. 1. Horny, aroused; 2. Sexy or attractive sexually

1. "Oh God I'm yiffy."
2. "Did you see her? She was yiffy."

Yiffy by Colin Ritter August 6, 2003

Yiffy 

Wanting to have sex in an animal costume with others in animal costumes.

I'm feeling Yiffy today, grab your costumes!

Yiffy by Zombiefied December 18, 2013

yiffy 

the coolest sexiest prettiest best personality you’ve ever met in your whole damn life, bitch.

jessie is yiffy as fuck!

yiffy by jaysee0712 February 23, 2022

iffy yiffy 

unto your gay

who sent iffy yiffy in general

iffy yiffy by anonymous January 28, 2021

Yifferendum 

A detailed book with a list of all known people who identify as a furry

Man 1: Hey man! Do you know if Kyle is a furry?
Man 2: No clue, lemme go check the yifferendum

Yifferendum by ZeroHero75 March 27, 2021

Yiffyraptor

An older male furry that preys on artists by paying for comissions with the sole intent of getting laid at conventions. May try to pass as interested in becoming a woman so he can sleep with lesbians or bi-curious underage girls. As soon as he does so, he'll stop paying.

At first I thought he was genuinely interested in my art, but then he turned out to be another yiffyraptor trying to get laid. He never even paid full price for the drawings he commissioned!

Yiffyraptor by Badgerbaiter December 4, 2010