Thesaurus.com
Dictionary.com
Showing results for best friend.
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.

What would you do if your best friend did something and you knew it was wrong?

From BBC • Apr. 9, 2026

Berlant plays Maddie’s best friend in the film.

From Los Angeles Times • Apr. 8, 2026

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

“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