Bestie
Bestie definition by Slang.net
This page explains what the slang term "Bestie" means. The definition, example, and related terms listed above have been written and compiled by the Slang.net team.
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A bestie is an endearing term for a best friend. It is commonly used by teenage girls when talking about their best friend.
Bestie is one of many terms for a best friend, which includes biffles, BFAW, work boyfriend, and BFF. Besties can finish each other's sentences, have tons of inside jokes, and are often accused of twinning.