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.
Staci Medium Tote Fall is a busy time of year, and a solid tote bag will be your best friend on holiday errands, at work meetings, and more. Gabriela Izquierdo, Southern Living, 18 Sep. 2025 With his loyal best friend Parvaiz (Raghav Juyal) and savvy manager Sanya (Anya Singh) by his side, Aasmaan navigates a glittering landscape filled with egos and unexpected betrayals. Isadora Wandermurem, Time, 18 Sep. 2025 The film is led by Black and Rudd, who star as best friends Doug and Griff, respectively. Jordana Comiter, PEOPLE, 18 Sep. 2025 Robbie cradles his sleeping child; bonds with his best friend, Cliff (Raúl Castillo), during a discussion about dating and intimacy; and then carefully removes his gun from a lockbox in preparation for a violent raid. Sophie Gilbert, The Atlantic, 17 Sep. 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 21 Sep. 2025.

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