BFF

noun

ˌbē-ˌef-ˈef 

plural BFFs

informal

: a very close friend

A BFF doesn't gossip about or lie to you. She doesn't share your secrets on her MySpace page.

—Girls' Life

Examples of BFF in a Sentence

Recent Examples on the Web

Claire’s ex-boyfriend Jase, a finance bro, shows up with a new girlfriend twenty years younger and her rude BFF. — Literary Hub, 6 Oct. 2026

Rodriguez suggests the Sephora Collection 12 Hour Colorful Contour Pencil Eyeliner in Aloha for a pencil option, and Colourpop BFF Liquid Liner in Try Me for a felt-tip liquid liner pick. — Marci Robin, Allure, 5 Oct. 2026

Formed in 2022 with BFF Damon and the seemingly everywhere Gerry Cardinale of Redbird Capitol, AE aims to widen the scope of traditional profit participation from a bonus program to a business model. — Dominic Patten, Deadline, 30 Sep. 2026

Then there is Swift’s BFF Ed Sheeran, whose tour was rocked by his opener, rapper Macklemore, attracting the ire of billionaire businessman Robert Kraft after Macklemore shared his pro-Palestinian feelings from the stage. — Lisa Respers France, CNN Money, 25 Sep. 2026

Word History

Etymology

Best Friends Forever

First Known Use

1978, in the meaning defined above