The Collaborative International Dictionary of English v.0.48:
Conciliate \Con*cil"i*ate\ (?; 106), v. t. [imp. & p. p.
Conciliated; p. pr & vb. n. Conciliating.] [L.
conciliatus, p. p. of conciliare to draw or bring together,
unite, from concilium council. See Council.]
To win ower; to gain from a state of hostility; to gain the
good will or favor of; to make friendly; to mollify; to
propitiate; to appease.
The rapacity of his father's administration had excited
such universal discontent, that it was found expedient
to conciliate the nation. --Hallam.
Syn: To reconcile; propitiate; appease; pacify.