best friend

American  

[best frend] / ˈbɛst ˈfrɛnd /

noun

1. a person’s closest or most cherished friend.

   Sheila has been my best friend since we were seven.

   Synonyms:

   bosom friend, bosom buddy, bff, bf, bestie

2. something that a person particularly depends on or has a special affection for.

   A purple, stuffed armadillo was my best friend and companion through my whole childhood.

3. something considered or suggested to be particularly useful or valuable.

   When it comes to saving for retirement, compound interest is your new best friend.

   Your local piano tuner could be your best friend when buying a piano.

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Etymology

Origin of best friend

First recorded before 1000

Example Sentences

“He was the most thoughtful, loving and supportive man to his soulmate April, and the most caring, involved, fun, kind and loving parent, and best friend, to his daughter Brody.”

From Los Angeles Times

Ollie, who is Titus’s best friend, is next to me, and he must be reading the same book as Titus because I feel like I’m getting the continuation of this morning’s bus ride.

From Literature

That easy-going, free-flowing approach is all over the record – whose stories of love and loss are conveyed with an easy informality, like your best friend spilling their secrets.

From BBC

Sarah Taylor thought she was travelling to a first aid course for work with her best friend Hannah Hardy in Newark, Nottinghamshire, earlier this month.

From BBC

She lives there with one of her children, along with her best friend and her two kids.

From BBC