The position or status of being an emissary; the office or work of a representative sent on a mission.
From emissary (a representative or messenger, from Latin emissarius, 'one sent out') plus the suffix -ship, which denotes rank or office.
This word rarely appears today because we prefer the simpler 'emissary role' or just 'ambassador,' but it shows how English once loved stacking -ship onto almost any person-word to express their position.
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