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.
Before being linked to Towns, Woods was a reality TV star, appearing on the shows of her famous former best friend Kylie Jenner, including Life of Kylie in 2017 and multiple episodes of Keeping Up With the Kardashians from 2015–2019. Jillian Sederholm, Entertainment Weekly, 26 Dec. 2025 One person noted that being the best man usually doesn't involve as many wedding responsibilities as a maid of honor, for example, so the bride's best friend will likely be able to uphold his duties. Ashlyn Robinette, PEOPLE, 23 Dec. 2025 Change your reward system from drinking to other pleasures, like watching your favorite show, enjoying a special dessert, or going to lunch with your best friend or partner. Sarah Allen Benton, SELF, 23 Dec. 2025 English was Nelson’s tour manager, protector, and best friend, as well as his drummer. Alex Abramovich, New Yorker, 22 Dec. 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 27 Dec. 2025.

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