The rank, office, position, or period of service of an ambassador in representing their country abroad.
From 'ambassador' plus the suffix '-ship' (the state, condition, or office of), creating a noun that describes the actual position itself and the responsibilities that come with it.
Being offered an ambassadorship is basically a huge honor in diplomacy—it means your country trusts you to represent them at the highest official level, and ambassadors often spend decades building the relationships needed for this role!
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