Flunk
Webster's Practical Dictionary- A Practical Dictionary of the Englih Language · 1884 · p. 160
flunk, v. i. [flunked (flunkt), fluxkixg.] To fail, back out, through fear. — n. A failure.
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The American Dictionary and Cyclopedia (1910)
Webster's Condensed Dictionary- A Condensed Dictionary of the English Language (1909)
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