best friend
Americannoun
-
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
-
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.
-
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.
Etymology
Origin of best friend
First recorded before 1000
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Charlie perhaps came to be my best friend and closest confidant in the world of politics.
From The Wall Street Journal • Jun. 5, 2026
“Call Up Nancy” is an anthem for anyone who’s ever had a ride-or-die best friend.
From Salon • Jun. 5, 2026
Blake says he misses his best friend and the teachers, and how the staff would let him draw when he needed to calm down.
From BBC • Jun. 1, 2026
With his best friend, Diahann Carroll, and a sizable contribution from Sidney Poitier, Aaron organizes the funeral, attempting to redeem the reputation he was hired to protect.
From Los Angeles Times • Jun. 1, 2026
But then, maybe I've got a new best friend, he thought with a smile.
From "Jeremy Thatcher, Dragon Hatcher" by Bruce Coville
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
