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Idioms and Phrases with in cement

in cement

Firmly settled or determined; unalterable. For example, Their policy on taxes was set in cement despite opposition. For a synonym, see cast in stone.

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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.