theretofore

adverb
there·​to·​fore | \ ˈt͟her-tə-ˌfȯr How to pronounce theretofore (audio) ; ˌt͟her-tə-ˈfȯr\

Definition of theretofore

: up to that time a theretofore unknown author

First Known Use of theretofore

14th century, in the meaning defined above

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

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