"overcome distrust or hostility of by soothing and pacifying," 1540s, from Latin conciliatus, past participle of conciliare "to bring together, unite in feelings, make friendly," from concilium "a meeting, a gathering of people," from assimilated form of com "together, together with" (see com-) + PIE *kal-yo-, suffixed form of root *kele- (2) "to shout" (the notion is of "a calling together"). Related: Conciliated; conciliating; conciliary. The earlier verb was Middle English concile "to reconcile" (late 14c.).
