Definition of best friend
- She's my best friend.
- We have been best friends since high school.
: superlative of good
: excelling all others
: most productive of good : offering or producing the greatest advantage, utility, or satisfaction
: superlative of well
: in the best (see 1best) way : to greatest advantage
: the best (see 1best) state or part
: one that is best
: the greatest degree of good or excellence
: to get the better of : outdo
: had best (see 2best 1)
What made you want to look up best friend? Please tell us where you read or heard it (including the quote, if possible).