slang, ironic
bestie
Meaning
- A best friend.
- Used, often sarcastically, to address anyone at all.
“Bestie, you cannot wear that to the interview.”
Where it came from
A shortening of best friend that has existed in casual speech for decades. Social media stretched its meaning through the 2010s and 2020s until it became a generic, often ironic, way to address a stranger.