ambassador
US /æmˈbæs.ə.dɚ/
UK /æmˈbæs.ə.dɚ/
1.
an accredited diplomat sent by a state as its permanent representative in a foreign country
:
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The ambassador presented his credentials to the President.
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She served as the US ambassador to France for five years.
2.
a person who represents, speaks for, or promotes a particular organization, group of people, activity, or brand
:
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He became a goodwill ambassador for the charity.
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The athlete was chosen as a brand ambassador for the new sports drink.