Short version of " best friend ". Usually used in slang cases

Means too: the best of best friends

girls so close you would think they would be lesbos but are straight; the chaser to each other's alc; number one on each other's drunken speed dials!!

A variation of the words, 'best friends,' or 'best friends forever.' Commonly used between two BFFs once the name 'Bff' becomes over-used and old, however, Bestie will never become more popular than Bff because BFF will always remain the original, and true name for Best Friends.

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.

A person who knows you better than any one else. When you insult them they just laugh and come up with something even more offensive then what you said. A bestie has 500 pictures of you, you hope no one will ever see. They know what makes you happy and what makes you sad, they can tell right away if something is wrong. they can say you are weird, stupid, idiotic, etc. and you can just laugh.

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.

bestis; slang for best of friends, or best of an object.