best friend
Americannoun
-
a person’s closest or most cherished friend.
Sheila has been my best friend since we were seven.
- Synonyms:
- bosom friend, bosom buddy, bff, bf, bestie
-
something that a person particularly depends on or has a special affection for.
A purple, stuffed armadillo was my best friend and companion through my whole childhood.
-
something considered or suggested to be particularly useful or valuable.
When it comes to saving for retirement, compound interest is your new best friend.
Your local piano tuner could be your best friend when buying a piano.
Etymology
Origin of best friend
First recorded before 1000
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.
Best friend David Gardner recalls how Beckham even had to be accompanied by friends in the bathroom for his safety, yet never retaliated.
From Seattle Times • Oct. 1, 2023
Best friend Stacey Kettner said Stephanie confided in her years later about what happened next.
From BBC • Dec. 3, 2022
"Couldn’t do it without my guy Rick! Best friend and greatest caddie to do it @RickyElliott appreciation day!"
From Fox News • Jul. 2, 2021
Best friend of the other two, once Nishibashi found out his friends were running, he immediately joined the team, as well.
From Washington Times • Oct. 12, 2020
“Insert a candle and it gives light only to the holder! Best friend of thieves and plunderers! Your son has fine taste, sir.”
From "Harry Potter And The Chamber Of Secrets" by J. K. Rowling
![]()
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.