'conciliator' originates from Latin, specifically the word 'conciliator' (from the verb 'conciliāre'), where 'con-' meant 'together' and 'conciliāre' meant 'to bring together, to win over'.

'conciliator' changed from Medieval Latin 'conciliator' (agent noun from 'conciliāre') into Middle English and later modern English as 'conciliator'.

Initially, it meant 'one who brings parties together or wins them over,' but over time it evolved into its current meaning of 'a person who mediates or reconciles disputing parties.'