tripartite
trilateral
deal
paction
legal agreement
bargain
covenant
pact
conditional agreement
done deal
seal the deal
letter agreement
hereunder
dialogue
talks
aligned
reach across the aisle
negotiation
compound
negotiable
triparty
on the table
hold up
sign on the dotted line
pactionally
standard
compromissorial
compact
concordat
sign
ratification
horse trading
quadrupartite
make the cheese more binding
bilateral contract
mediation
tripartisanship
it's a date
sense of the meeting
triangular
kabuliyat
third-party
agreeing
make terms
arrangement
common ground
tetrapartite
convenientia
consense
oh ar