be best friends with

idiom

Definition of be best friends with

: to be someone's closest friend She is best friends with my younger sister.

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Cite this Entry

“Be best friends with.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/be%20best%20friends%20with. Accessed 7 Mar. 2021.

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