In a manner intended to bring about agreement or reduce hostility; in a peace-making way.
Conciliating + -ly, building from the present participle. The double suffix (participle + adverbial) shows how English stacks grammatical markers to create precisely nuanced meanings.
This adverb sounds formal and somewhat old-fashioned, but it's exactly what you need when you want to describe someone *speaking* in a gentle, bridge-building way—'He spoke conciliatingly, hoping to ease tensions.'
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