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.
No, your best friend is the audience. Sabienna Bowman, PEOPLE, 13 Nov. 2025 When his home was threatened by a new property owner, the community and his best friend Julie launched a grassroots program to save him. Giana Levy, Variety, 13 Nov. 2025 The Boys From Biloxi is a high-stakes family crime drama centered on two childhood best friends – one a prosecutor, the other a mob heir – who are forced onto a violent collision course by the sins of their fathers and for the soul of their city. Anthony D'alessandro, Deadline, 13 Nov. 2025 Diamonds are a girl’s best friend, but for Sabrina Carpenter, platinum is her element of choice. Michael Saponara, Billboard, 13 Nov. 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 14 Nov. 2025.

Last Updated: - Updated example sentences
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