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

That energy took her from junior trader on Wall Street to media personality and founder of her own financial education brand, Your Rich BFF. — Jennifer Liu, CNBC, 13 Aug. 2026

What was left on the cutting room floor, though, was an emotional peek at the backstory of her BFF horse Bullseye. — Brian Truitt, USA Today, 12 Aug. 2026

If younger-looking skin is your goal, then Patchology’s Glow Potion Illuminating Superfood Serum is about to become your new BFF. — Kyra Surgent, InStyle, 5 Aug. 2026

Okay, what’s your message for your BFF and Big Brother mentor Frankie Grande, who has been watching you all summer? — Dalton Ross, Entertainment Weekly, 31 July 2026

Word History

Etymology

Best Friends Forever

First Known Use

1978, in the meaning defined above