look up any word, like cunt:
 
3.
Friends who have each other's backs, look out for each other, spend lots of time together, and are just really good friends.
They have inside jokes together, they go to the park and swing on swing sets, get ice cream, go to the beach, go to concerts, go bowling, and basically any activity that they like doing together as friends.
1. Kaely and Xander are besties!

2. Kaely: Yesterday, I went to the park and played on the swings with Xander!
Sam: Well of course! You're besties!
by meeoww1234 August 15, 2009
 
8.
SOMEONE U CONSIDER YOUR BEST FRIEND, YOUR PAL, HOMIE OR "ACE BOON COON". PERSON U CAN DEPEND ON
"SHNEL, IS MY BESTY . WE RIDE OUT 4 EACHOTHER
by Ph!llyD!va April 22, 2010
 
9.
A word that means best friends. Is usually said by teenage girls who are insecure about themselves and therefore calls everyone they come in contact with a "besty." She will generally comment "besties," on every picture of herself with someone else tagged on facebook.

The word is pronounced "best-ees". It rhymes with testies.
Jill: Hi.
Insecure girl: Hi!!!
Insecure girl's friend: Who was that?
Insecure girl: Oh that was Jill, we're besties.



by dumbWord March 21, 2009
 
10.
the coolest friends in the whole wide world
we're like bff jills, its legit, fa sho, its besties time!
by the hoe May 18, 2008
 
11.
the definition of bestys is like best friends
for example
eden and antonia are bestys
eden and antonia really love eachother, they must be bestys !
by bush tucker April 19, 2013
 
12.
A girls two best friends that are always there for her no matter what. Also a girl who will always have her friend's backs the way they have hers. Closer than family and better than friends.
I love my Besties they are Awesome!
by FaeryBliss April 12, 2010
 
13.
Best friends for ever. Always there when you need them. Coolests sets of besties usually consist of a boy named ryan and a girl named ashley.
Me and her are besties.
by Bestie #1 February 08, 2010
 
14.
Besties (noun) to be in the state of every hilarity and laugh constantly, but cry too and just spend too much time together listening to amazing and amazingly crappy music and dancing and cooking and living in the chalet and shopping and coffee-ing/vanilla milk-ing at Javasti.
The besties are going to go paint the town.
by Lilmspolkadot January 24, 2009