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commissioner

/kəˈmɪʃənər/

Official appointed to perform duties or oversee an organization

From Latin, transmitted through Old French and Medieval Latin commission (Delegated authority).

noun
commission
Medieval Latin
Verified
commissiōnārius
A person entrusted with a commission or delegated task

from Medieval Latin commissiōnārius. Doublet of commissionaire. By surface analysis, commission +‎ -er.

Anglo-French
Verified
commissionaire
An agent appointed to carry out authorized business

from Anglo-French commissionaire

Middle English
Verified
commissioner
Someone appointed by authority to perform specific duties

from Middle English commissioner

Modern English
Verified
commissioner
An official, commission member, or person overseeing a department

from Middle English commissioner

Modern English
commissioner

Picture a medieval official handing someone a sealed document and saying, in effect, “This authority is now yours—go do the job.” That entrusted assignment was a Latin commissio, from committere, “to bring together” or “entrust,” and it traveled into Anglo-French as commissionaire before appearing in Middle English as commissioner. By the early 15th century, the word meant a person appointed by proper authority; by the 1530s, it could specifically mean a member of a commission. The family resemblance is surprisingly broad: commission, committee, commit, and mission all circle around the idea of sending, entrusting, or assigning—though mission keeps the sense of being sent, while commission emphasizes the authority to act. In modern government, a commissioner is therefore not merely a person with a title but someone carrying a borrowed power: the authority belongs to the appointing body, and the commissioner temporarily carries its seal.

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