conciliˈationistn. an advocate of a policy of conciliation.
ΘΚΠ
society > society and the community > dissent > absence of dissension or peace > bringing about concord or peace > [noun] > appeasing, pacifying, or propitiating > advocate of
conciliationist1826
1826 Blackwood's Edinb. Mag.20 228 Shall we fear to tell those Conciliationists that we can do very well without their good opinion?