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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.

“Sustained high oil prices are the best friend of exploration,” said Schreiner Parker, an analyst at Rystad Energy, a research and consulting firm.

From The Wall Street Journal • Apr. 20, 2026

Berlant plays Maddie’s best friend in the film.

From Los Angeles Times • Apr. 8, 2026

Alexa Demie plays Cassie's former best friend Maddy, who will be seen reappearing in her life.

From BBC • Apr. 8, 2026

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

From MarketWatch • Apr. 3, 2026

I’ve never said this out loud to Autumn before; it was just understood that she was my best friend and that she’d be there for me no matter what.

From "Kwame Crashes the Underworld" by Craig Kofi Farmer