noun, slang ·Moderate ·College level

Definitions

Noun

1. 1
   A best friend. informal

   "You're supposed to be my bestie, Mel. We used to tell each other everything. So what's this Toby secret you can't tell me?"

2. 2
   A term of address for someone, usually used to instruct, to make a statement, or to draw attention. informal
3. 3
   A friend (any in general). informal

Synonyms

All synonyms

best friend

Example

More examples

"Donald my bestie? I'd rather have a pig as a best friend."

Etymology

From best + -ie.

Related phrases

best friend

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.