conciliatoryadjective
us/kənˈsɪl·i·əˌtɔr·i, -ˌtoʊr·i/intended to show that you care about the feelings or opinions of someone who is angry or upset with you:
Fitzwater struck a conciliatory tone, saying he didn’t think anybody was to blame.
conciliation
noun [ U ] us/kənˌsɪl·iˈeɪ·ʃən/
Conciliation, not confrontation, is the key to ending the conflict.