expositor

noun
ex·pos·i·tor | \ik-ˈspä-zə-tər \

Definition of expositor 

: a person who explains : commentator

First Known Use of expositor

14th century, in the meaning defined above

History and Etymology for expositor

Middle English expositour, from Anglo-French expositur, from Late Latin expositor, from Latin exponere

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The first known use of expositor was in the 14th century

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to teach someone the beliefs of a group

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