BFF

slang An initialism for "best friend(s) forever," referring to a friend whom one holds very dear and believes will remain a friend for all time. I'm so excited that my BFF is coming to visit this weekend! Oh yeah, Krista's her BFF—they've been inseparable for years. Carly's my BFF, so I can tell her anything.

See also:

best friend forever
bosom friend
bosom friends
man's best friend
bosom buddy
bosom buddy/friend
pal
bosom pal
MFWTK
chum

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