diplomatic
US /ˌdɪp.ləˈmæt̬.ɪk/
UK /ˌdɪp.ləˈmæt̬.ɪk/

1.
of or concerning the profession, activity, or skill of managing international relations
:
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The ambassador handled the crisis with great diplomatic skill.
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They are engaged in complex diplomatic negotiations.
2.
having or showing an ability to deal with people in a sensitive and effective way
:
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She gave a very diplomatic answer to avoid offending anyone.
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It requires a diplomatic approach to resolve the conflict.