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Idioms and Phrases with six feet under

six feet under

Dead and buried, as in No, you can't read my diary—not until I'm six feet under. Although this expression alludes to what has long been the traditional depth of a grave, that is, approximately the same as the length of the coffin, it dates only from the mid-1900s.

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The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.