Definition of be the best of friends in English:

be the best of friends

Be very close friends: she’s really nice and we’re the best of friends
More example sentences
  • We are now the best of friends - because friends can do anything together!
  • Last week we had been friends, not the best of friends, but friends nonetheless.
  • The three of us had become very close to each other and became the best of friends.
See parent entry: best

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