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à fond

adverb
\ ä-ˈfōⁿ\

Definition of à fond 

1 : thoroughly he knows his subject à fond
2 : to the fullest extent : to the utmost supporting their party's principles à fond

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First Known Use of à fond

1813, in the meaning defined at sense 1

History and Etymology for à fond

French, literally, to the bottom

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The first known use of à fond was in 1813

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