noun (plural yeens)
1. (furry jargon) a hyena, often used in a similar way to the word "doggo", except "yeen" is a clipping of the original word
2. a nickname for someone whose fursona is a hyena

verb?
1. a contraction of the words "you ain't" or "you ain't even"

Note:
There are many other nicknames for hyenas that have been derived from this word. (e.g.: yeener, yeen bean, yeeb, etc.) They all mean pretty much the same thing, and are interchangeable.
noun (plural yeens)
1. I got to go see some actual yeens at a wildlife education center yesterday. Did you know there are different kinds of yeens?

verb?
1. Yeen gon' say hi your gramma?
by Waifi July 6, 2020
Get the yeen mug.
Slang for "you ain't".
typically how southern people say it
"yeen shit"
by hahalabacka May 7, 2004
Get the yeen mug.
Something you say when you do not wish to have a conversation with someone else. It typically ends the interaction by confusing the other person, which causes them to almost instantaneously cease conversing with you.
Person A: yo, what's up dude?
Person B: yeen
Person A: what the fuck?
by Samueliscool223 September 26, 2021
Get the yeen mug.
yeen n. someone or something who is specifically awkward. awkward in a silent, creepy, reclusive sense. frustratingly quiet or annoying in general. can have negative or somehow positive connotations.

yeenish (adj.) see above

to yeen (v) to participate in awkward activities (usually with atleast one other person)

yeenily (adv.) to do something in an awkward fashion
wow, i dont know his deal last night he was being SUCH a yeen.

pssh you didnt have to be so yeenish, just come out and tell me that you like me!

we yeened around for a while, but things got less awkward i swear.
by Raqwail February 20, 2006
Get the yeen mug.
he so yeen!
damn! that’s yeen
by yeenism December 28, 2017
Get the yeen mug.
"Yeen" is a different pronunciation of "hyena," commonly used in the Furry Fandom and Lion Guard community.
"Janja is the best yeen, i love him, that big boye."
by Battyfoox February 13, 2018
Get the Yeen mug.