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
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Prior to arriving at the prison, Savannah was spotted in Pensacola with her best friend and hair stylist, Tyler Bishop. Janelle Ash , Christina Dugan Ramirez , Larry Fink, FOXNews.com, 28 May 2025 Alastair Stout will play Harry’s best friend Ronald Weasley, and Arabella Stanton will round out the classic trio of heroes as bookworm Hermione Granger, who matches the courage of the previous two Gryffindors. Dessi Gomez, Deadline, 27 May 2025 At the core of Sorry, Baby, and from which much of its levity springs, is the friendship between Agnes and her best friend, Lydie, played by Ackie (Blink Twice, Mickey 17). Jen Wang, Vogue, 27 May 2025 The situation is further complicated by her mother’s best friend, who has taken on a co-parenting role that feels more like an alliance against her. Ashley Vega, People.com, 27 May 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 3 Jun. 2025.

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