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Definitions

best friend

[best frend] / ˈbɛst ˈfrɛnd /
NOUN
bosom friend
Synonyms
WEAK
bosom buddy close friend companion confidant dear friend pal soul mate
NOUN
fast friend
Synonyms
WEAK
constant friend devoted friend fidus Achates good friend great friend staunch friend trusted friend trusty friend

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Her best friend, Max, who was unofficially adopted by Suzanna’s parents and is shellacked in cynicism as played by the excellent Alden Ehrenreich, exhorts her to pull herself together and face her “big girl problems.”

From The Wall Street Journal • Apr. 7, 2026

“Instagram can be your best friend as a Realtor,” she adds.

From MarketWatch • Apr. 3, 2026

Kerr and her best friend had spent hundreds of dollars preparing for Barbie Dream Fest, a three-day event that organizers touted as a chance for fans to “live the dream life.”

From Los Angeles Times • Apr. 1, 2026

If so, what does that mean for those who don't see them as man's best friend?

From BBC • Mar. 29, 2026

“And this is Ingrid Ant, my best friend since we were three.”

From "Bye Forever, I Guess" by Jodi Meadows