middleman
middlemanism
go-between
intercessor
intermediarily
interagent
step in
intermedium
comprador
intermediate
middlemanship
agentively
mediately
second hand
agenting
participatively
jackal
surrogatively
intermediator
vice
intermediary
promisor
responsorially
dalal
bigfoot
mediacy
midcommissural
entreatingly
fence
hold court
make friendly
interpose
partaking
call balls and strikes
chancer
give a good account of oneself
instigator
informalistic
informer
interventive
cut-out
interprofessionally
initiator
on the book
corresponsively
addressivity
supervision
play into someone's hands
mentorially
participatorily