Conciliate - definition

Conciliate: [From concilium, a meeting, assembly] to win over, soothe the anger of, make friendly, placate; to gain regard, favor, good will, esteem, etc. by friendly acts; to reconcile, make consistent; win, gain, propitiate, reconcile, appease, pacify

Conciliatory: tending to conciliate or reconcile; tending to make peace with persons at variance; e.g making conciliatory propositions to the insurgents.