ADJ.
all
VERB + BUDDY-BUDDY
speak, tend
BUDDY-BUDDY + NOUN
terms
PREP.
on, with
ADV.
again
adj
Very friendly or expressing close familiarity with someone.
They're over there being all buddy-buddy with one another.
I can personally imagine a scenario where, within a year, President Trump is on buddy-buddy terms again with Mexico. But you cannot unsee what happened over the last 48 hours.
noun
A close male friend.
adjective — (used informally) associated on close terms
They're over there being all buddy-buddy with one another.
WiktionaryI can personally imagine a scenario where, within a year, President Trump is on buddy-buddy terms again with Mexico. But you cannot unsee what happened over the last 48 hours.
WiktionaryWhenever I speak Japanese, 9 times out of 10 it’s with a friend, so I always tend to speak buddy-buddy.
Tatoeba · #11113355i Register
In some senses, buddy-buddy is marked as derogatory, informal. Watch for register when choosing this word.