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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.

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

Catherine Balck has many acquaintances and casual friends, but only one best friend, Linda Coss.

From The Wall Street Journal • Mar. 23, 2026

“What the heck, George? Churchill’s always been enough for you before. You know, besides the fact that your grandparents and all your aunts and uncles and cousins and your best friend live here.”

From "Two Degrees" by Alan Gratz