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