best friend

noun

plural best friends
1
: a person's closest and dearest friend
She's my best friend.
We have been best friends since high school.
2
: a person's most desirable or valuable possession or resource
Diamonds may be a girl's best friend, but gold is more affordable.William Giese
Lycra-cotton leggings and tunic tops are the pregnant woman's best friend, sartorially speaking.Anne Reeks
When cops bang on the door, the toilet is a drug dealer's best friend.Frederick Kaufman

Examples of best friend in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
At least one of your best friends is black and white, thick and heavy, and has a spine of glue. Chris John Amorosino, Hartford Courant, 27 July 2025 College best friends and roommates Abby White and Claire Pearl went to the concert together. Madeline King, Kansas City Star, 27 July 2025 After success, younger brother's life veered into drug use, family said The brothers were best friends growing up in a Christian home, their mother, Anita Eaves, told police. Jose R. Gonzalez, AZCentral.com, 27 July 2025 In the flick, Sunny stars as Stacy Friedman, Sadie appears as Stacy's sister Ronnie, Adam plays their father and Jackie appears as Gabi, the mother of Stacy's best friend. Adrianna C. Freedman, People.com, 26 July 2025 See All Example Sentences for best friend

Word History

First Known Use

13th century, in the meaning defined at sense 1

Time Traveler
The first known use of best friend was in the 13th century

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Cite this Entry

“Best friend.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/best%20friend. Accessed 7 Aug. 2025.

Last Updated: - Updated example sentences
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