best friend
5 synonyms and 2 antonyms for best friend, grouped by meaning and by how common each one is.
Noun — The one person you are closest to outside your family, whom you trust most, tell things you tell nobody else, and choose to spend the most time with.
Synonyms
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use best friend
The word patterns that sound natural to a native speaker.
Neutral. Bestie and BFF are the casual forms; BFF originated in text and is now used ironically as often as sincerely.
Etymology
From Middle English best frend, best freond, equivalent to best + friend. Compare West Frisian bêste freon (“best friend”), Dutch beste vriend (“best friend”), German bester Freund (“best friend”).
Full origin of best friend →