best friend

noun

plural best friends

: a person's closest and dearest friend

She's my best friend.

We have been best friends since high school.

: 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

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The clip has been viewed over a million times and elicited more than 3,000 comments, with many users celebrating parents who have become their adult children's best friends. —

Jonathan Granoff, Newsweek, 29 Jan. 2025 Oppenheim, 47, claimed his best friend and co-star, Mary Fitzgerald Bonnet, and her husband Romain were the victims of a burglary last week. —

Tracy Wright, Fox News, 29 Jan. 2025 Their best friends and housemates Chris (Bowen Yang) and Min (Han Gi-Chan) also find themselves at a crossroads. —

Carlos Aguilar, Variety, 28 Jan. 2025 But Vanessa is more introverted than her giggly best friend. —

Ben Travers, IndieWire, 28 Jan. 2025 See all Example Sentences for best friend