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.