middle
arbitrational
arbitrative
coming between
going between
intercessional
intercessory
intercurrent
interjacent
interlocutory
intermedial
intermediary
intermediate
intermediatory
intervenient
interventional
mean
medial
median
mediating
mediative
mediatorial
mediatory
medium
mesne
pacificatory
careening
cleaning
convening
demeaning
greening
leaning
machining
meaning
preening
screening
weaning