JP
Justice
MC
alleviative
alleviator
anchorman
anodyne
arbiter
arbitrator
assuager
balm
bencher
calmative
chair
chairman
conciliator
coordinator
critic
cushion
dolorifuge
emcee
his honor
his lordship
his worship
impartial arbitrator
indicator
judge
justice
lenitive
magistrate
master of ceremonies
mediator
mitigator
modulator
mollifier
negotiator
pacificator
pacifier
palliative
peacemaker
president
presiding officer
referee
restraining hand
salve
sedative
shock absorber
soother
soothing syrup
stabilizer
co-founder
moderate-liberal
vice president
vice-chairman